Accessing table cells from a specific row to retrieve their embedded input value











up vote
1
down vote

favorite












I would like the function to return the result of this action on the values ​​from the table below:




a+b*c-(e/f)




This action is worked whithout row with e and f. I found similar problem here but there is no solution for this one special last row. I'm shure how i should get value from e and f inputs. The function shul be workinf for each row - no matter how many of them will be.






function calc(id) {

  var row = id.parentNode.parentNode;

  var a = row.cells[0].getElementsByTagName('input')[0].value;

  var b = row.cells[1].getElementsByTagName('input')[0].value;

  var c = row.cells[2].getElementsByTagName('input')[0].value;

  var e = row.cells[0].getElementsByTagName('input')[1].value; //not working

  var f = row.cells[1].getElementsByTagName('input')[1].value; //not working



  var res = +a + +b * c - (e / f);



  row.cells[3].getElementsByTagName('input')[0].value = res;

}

body {

  font-family: "Calibri";

  margin: 0;

}



#inTotal {

  font-weight: bold;

  border-bottom: 2px solid black;

}



.nr {

  font-weight: bold;

}



input {

  border: none;

  background: transparent;

  text-align: center;

}



table,

th,

td {

  border: 1px solid black;

  border-collapse: collapse;

}



th {

  background-color: #b9c1ce;

}



.Left {

  text-align: left;

  margin-left: 5px;

}

<table id="myTable">

  <tr>

    <th align="center" width="5%">A</th>

    <th align="center" width="10%">B</th>

    <th align="center" width="5%">C</th>

    <th align="center" width="15%">Result</th>

  </tr>

  <tr>

    <td align="center" width="5%"><input onkeyup="calc(this);" type="text" name="quantity" min="1" max="99" onchange="calc(this);"></td>

    <td align="center" width="10%"><input onkeyup="calc(this);" type="text" name="summ" min="0" max="999999" onchange="calc(this);"></td>

    <td align="center" width="5%"><input onkeyup="calc(this);" type="text" name="rate" min="0" max="100" onchange="calc(this);"></td>

    <td align="center" width="15%"><input align="center" type="text" name="total" min="0" max="99999999"></td>

  </tr>

  <tr>

    <td align="center" width="5%"><input onkeyup="calc(this);" type="text" name="quantity" min="1" max="99" onchange="calc(this);"></td>

    <td align="center" width="10%"><input onkeyup="calc(this);" type="text" name="summ" min="0" max="999999" onchange="calc(this);"></td>

    <td align="center" width="5%"><input onkeyup="calc(this);" type="text" name="rate" min="0" max="100" onchange="calc(this);"></td>

    <td align="center" width="15%"><input align="center" type="text" name="total" min="0" max="99999999"></td>

  </tr>

  <tr>

    <th align="center" width="5%">E</th>

    <td align="center" width="10%"><input onkeyup="calc(this);" type="text" name="summ" min="0" max="999999" onchange="calc(this);"></td>

    <th align="center" width="5%">F</th>

    <td align="center" width="15%"><input align="center" type="text" name="total" min="0" max="99999999"></td>

  </tr>

</table>





UPDATE
I wrote a function that was supposed to count the values ​​for data from lines with variables e and f. But unfortunately it lacks to be performed for all rows? I'm not shure how set numbers of rows to serve?






function calc(element) {

  var row = element.parentNode.parentNode;

  var a = row.cells[0].getElementsByTagName('input')[0].value;

  var b = row.cells[1].getElementsByTagName('input')[0].value;

  var c = row.cells[2].getElementsByTagName('input')[0].value;



  // Getting the last row

//  var lastRow = document.getElementById("last-values");



  // Then, retrieving e and f

  //var e = lastRow.cells[1].getElementsByTagName('input')[0].value;

  //var f = lastRow.cells[3].getElementsByTagName('input')[0].value;



  var res = +a + +b * c;



  row.cells[3].getElementsByTagName('input')[0].value = res;

}



function lastEle()

{	

		var y = document.getElementById('e').value;

		var z = document.getElementById('f').value;

		

		var mytable = document.getElementById('myTable');

		var myinputs = mytable.getElementsByTagName('input');

		var rowy = mytable.rows.length;

		

		for (var i = 1; i < mytable.rows.length; i++) {

		

		var tmp = mytable.rows[i].myinputs[3].value;

		var wynik = +y + +z + +tmp;

		mytable.rows[i].myinputs[4].value = wynik;

}

}

 body {

    font-family: "Calibri"; margin:0;}



#inTotal {

	font-weight: bold;

	border-bottom: 2px solid black;

}

.nr {

	font-weight: bold;

}

input {

    border: none;

    background: transparent;

	text-align: center;

}

table, th, td {

    border: 1px solid black;	

    border-collapse: collapse;

	

}

th{

background-color: #b9c1ce;

}

.Left {

	text-align: left;

	margin-left: 5px;

}

<table id="myTable">

<tr class="cipa"> 

<th align="center" width="5%">A</th>    

<th align="center" width="10%">B</th>

<th align="center" width="5%">C</th>

<th align="center" width="15%">D</th>

<th align="center" width="15%">F</th>

</tr>

<tr>                

<td align="center" width="5%"><input onkeyup="calc(this);" type="text" name="quantity" min="1" max="99" onchange="calc(this);"></td>                    

<td align="center" width="10%"><input onkeyup="calc(this);" type="text" name="summ" min="0" max="999999" onchange="calc(this);"></td>                        

<td align="center" width="5%"><input onkeyup="calc(this);" type="text" name="rate" min="0" max="100" onchange="calc(this);"></td>                            

<td align="center" width="15%"><input align="center" type="text" onchange="calc(this);lastEle();" id="ads" name="total" min="0" max="99999999"></td>    

<td align="center" width="15%"><input align="center" type="text" onkeyup="lastEle();" value="3" name="total" min="0" max="99999999"></td>

</tr>

<tr>                

<td align="center" width="5%"><input onkeyup="calc(this);" type="text" name="quantity" min="1" max="99" onchange="calc(this);"></td>                    

<td align="center" width="10%"><input onkeyup="calc(this);" type="text" name="summ" min="0" max="999999" onchange="calc(this);"></td>                        

<td align="center" width="5%"><input onkeyup="calc(this);" type="text" name="rate" min="0" max="100" onchange="calc(this);"></td>                            

<td align="center" width="15%"><input align="center" type="text" onchange="calc(this);lastEle();" name="total" min="0" max="99999999"></td>

<td align="center" width="15%"><input align="center" onkeyup="lastEle();" type="text" name="total" min="0" max="99999999"></td>

</tr>



<tr>

    <!--  e  -->

    <th>e</th>

    <td><input type="text" onkeyup="lastEle();" id="e"  value="" /></td>

    <!--  f  -->

    <th>f</th>

    <td><input type="text" id="f" onkeyup="lastEle();" value="" /></td>

  </tr>              

</table>








javascript html







share|improve this question
























  • So when in which moment is problem. Sorry if is a stupid question but i'm trying learning js.
    – simple_code
    Nov 22 at 17:08















up vote
1
down vote

favorite












I would like the function to return the result of this action on the values ​​from the table below:




a+b*c-(e/f)




This action is worked whithout row with e and f. I found similar problem here but there is no solution for this one special last row. I'm shure how i should get value from e and f inputs. The function shul be workinf for each row - no matter how many of them will be.






function calc(id) {

  var row = id.parentNode.parentNode;

  var a = row.cells[0].getElementsByTagName('input')[0].value;

  var b = row.cells[1].getElementsByTagName('input')[0].value;

  var c = row.cells[2].getElementsByTagName('input')[0].value;

  var e = row.cells[0].getElementsByTagName('input')[1].value; //not working

  var f = row.cells[1].getElementsByTagName('input')[1].value; //not working



  var res = +a + +b * c - (e / f);



  row.cells[3].getElementsByTagName('input')[0].value = res;

}

body {

  font-family: "Calibri";

  margin: 0;

}



#inTotal {

  font-weight: bold;

  border-bottom: 2px solid black;

}



.nr {

  font-weight: bold;

}



input {

  border: none;

  background: transparent;

  text-align: center;

}



table,

th,

td {

  border: 1px solid black;

  border-collapse: collapse;

}



th {

  background-color: #b9c1ce;

}



.Left {

  text-align: left;

  margin-left: 5px;

}

<table id="myTable">

  <tr>

    <th align="center" width="5%">A</th>

    <th align="center" width="10%">B</th>

    <th align="center" width="5%">C</th>

    <th align="center" width="15%">Result</th>

  </tr>

  <tr>

    <td align="center" width="5%"><input onkeyup="calc(this);" type="text" name="quantity" min="1" max="99" onchange="calc(this);"></td>

    <td align="center" width="10%"><input onkeyup="calc(this);" type="text" name="summ" min="0" max="999999" onchange="calc(this);"></td>

    <td align="center" width="5%"><input onkeyup="calc(this);" type="text" name="rate" min="0" max="100" onchange="calc(this);"></td>

    <td align="center" width="15%"><input align="center" type="text" name="total" min="0" max="99999999"></td>

  </tr>

  <tr>

    <td align="center" width="5%"><input onkeyup="calc(this);" type="text" name="quantity" min="1" max="99" onchange="calc(this);"></td>

    <td align="center" width="10%"><input onkeyup="calc(this);" type="text" name="summ" min="0" max="999999" onchange="calc(this);"></td>

    <td align="center" width="5%"><input onkeyup="calc(this);" type="text" name="rate" min="0" max="100" onchange="calc(this);"></td>

    <td align="center" width="15%"><input align="center" type="text" name="total" min="0" max="99999999"></td>

  </tr>

  <tr>

    <th align="center" width="5%">E</th>

    <td align="center" width="10%"><input onkeyup="calc(this);" type="text" name="summ" min="0" max="999999" onchange="calc(this);"></td>

    <th align="center" width="5%">F</th>

    <td align="center" width="15%"><input align="center" type="text" name="total" min="0" max="99999999"></td>

  </tr>

</table>





UPDATE
I wrote a function that was supposed to count the values ​​for data from lines with variables e and f. But unfortunately it lacks to be performed for all rows? I'm not shure how set numbers of rows to serve?






function calc(element) {

  var row = element.parentNode.parentNode;

  var a = row.cells[0].getElementsByTagName('input')[0].value;

  var b = row.cells[1].getElementsByTagName('input')[0].value;

  var c = row.cells[2].getElementsByTagName('input')[0].value;



  // Getting the last row

//  var lastRow = document.getElementById("last-values");



  // Then, retrieving e and f

  //var e = lastRow.cells[1].getElementsByTagName('input')[0].value;

  //var f = lastRow.cells[3].getElementsByTagName('input')[0].value;



  var res = +a + +b * c;



  row.cells[3].getElementsByTagName('input')[0].value = res;

}



function lastEle()

{	

		var y = document.getElementById('e').value;

		var z = document.getElementById('f').value;

		

		var mytable = document.getElementById('myTable');

		var myinputs = mytable.getElementsByTagName('input');

		var rowy = mytable.rows.length;

		

		for (var i = 1; i < mytable.rows.length; i++) {

		

		var tmp = mytable.rows[i].myinputs[3].value;

		var wynik = +y + +z + +tmp;

		mytable.rows[i].myinputs[4].value = wynik;

}

}

 body {

    font-family: "Calibri"; margin:0;}



#inTotal {

	font-weight: bold;

	border-bottom: 2px solid black;

}

.nr {

	font-weight: bold;

}

input {

    border: none;

    background: transparent;

	text-align: center;

}

table, th, td {

    border: 1px solid black;	

    border-collapse: collapse;

	

}

th{

background-color: #b9c1ce;

}

.Left {

	text-align: left;

	margin-left: 5px;

}

<table id="myTable">

<tr class="cipa"> 

<th align="center" width="5%">A</th>    

<th align="center" width="10%">B</th>

<th align="center" width="5%">C</th>

<th align="center" width="15%">D</th>

<th align="center" width="15%">F</th>

</tr>

<tr>                

<td align="center" width="5%"><input onkeyup="calc(this);" type="text" name="quantity" min="1" max="99" onchange="calc(this);"></td>                    

<td align="center" width="10%"><input onkeyup="calc(this);" type="text" name="summ" min="0" max="999999" onchange="calc(this);"></td>                        

<td align="center" width="5%"><input onkeyup="calc(this);" type="text" name="rate" min="0" max="100" onchange="calc(this);"></td>                            

<td align="center" width="15%"><input align="center" type="text" onchange="calc(this);lastEle();" id="ads" name="total" min="0" max="99999999"></td>    

<td align="center" width="15%"><input align="center" type="text" onkeyup="lastEle();" value="3" name="total" min="0" max="99999999"></td>

</tr>

<tr>                

<td align="center" width="5%"><input onkeyup="calc(this);" type="text" name="quantity" min="1" max="99" onchange="calc(this);"></td>                    

<td align="center" width="10%"><input onkeyup="calc(this);" type="text" name="summ" min="0" max="999999" onchange="calc(this);"></td>                        

<td align="center" width="5%"><input onkeyup="calc(this);" type="text" name="rate" min="0" max="100" onchange="calc(this);"></td>                            

<td align="center" width="15%"><input align="center" type="text" onchange="calc(this);lastEle();" name="total" min="0" max="99999999"></td>

<td align="center" width="15%"><input align="center" onkeyup="lastEle();" type="text" name="total" min="0" max="99999999"></td>

</tr>



<tr>

    <!--  e  -->

    <th>e</th>

    <td><input type="text" onkeyup="lastEle();" id="e"  value="" /></td>

    <!--  f  -->

    <th>f</th>

    <td><input type="text" id="f" onkeyup="lastEle();" value="" /></td>

  </tr>              

</table>








javascript html







share|improve this question
























  • So when in which moment is problem. Sorry if is a stupid question but i'm trying learning js.
    – simple_code
    Nov 22 at 17:08













up vote
1
down vote

favorite









up vote
1
down vote

favorite











I would like the function to return the result of this action on the values ​​from the table below:




a+b*c-(e/f)




This action is worked whithout row with e and f. I found similar problem here but there is no solution for this one special last row. I'm shure how i should get value from e and f inputs. The function shul be workinf for each row - no matter how many of them will be.






function calc(id) {

  var row = id.parentNode.parentNode;

  var a = row.cells[0].getElementsByTagName('input')[0].value;

  var b = row.cells[1].getElementsByTagName('input')[0].value;

  var c = row.cells[2].getElementsByTagName('input')[0].value;

  var e = row.cells[0].getElementsByTagName('input')[1].value; //not working

  var f = row.cells[1].getElementsByTagName('input')[1].value; //not working



  var res = +a + +b * c - (e / f);



  row.cells[3].getElementsByTagName('input')[0].value = res;

}

body {

  font-family: "Calibri";

  margin: 0;

}



#inTotal {

  font-weight: bold;

  border-bottom: 2px solid black;

}



.nr {

  font-weight: bold;

}



input {

  border: none;

  background: transparent;

  text-align: center;

}



table,

th,

td {

  border: 1px solid black;

  border-collapse: collapse;

}



th {

  background-color: #b9c1ce;

}



.Left {

  text-align: left;

  margin-left: 5px;

}

<table id="myTable">

  <tr>

    <th align="center" width="5%">A</th>

    <th align="center" width="10%">B</th>

    <th align="center" width="5%">C</th>

    <th align="center" width="15%">Result</th>

  </tr>

  <tr>

    <td align="center" width="5%"><input onkeyup="calc(this);" type="text" name="quantity" min="1" max="99" onchange="calc(this);"></td>

    <td align="center" width="10%"><input onkeyup="calc(this);" type="text" name="summ" min="0" max="999999" onchange="calc(this);"></td>

    <td align="center" width="5%"><input onkeyup="calc(this);" type="text" name="rate" min="0" max="100" onchange="calc(this);"></td>

    <td align="center" width="15%"><input align="center" type="text" name="total" min="0" max="99999999"></td>

  </tr>

  <tr>

    <td align="center" width="5%"><input onkeyup="calc(this);" type="text" name="quantity" min="1" max="99" onchange="calc(this);"></td>

    <td align="center" width="10%"><input onkeyup="calc(this);" type="text" name="summ" min="0" max="999999" onchange="calc(this);"></td>

    <td align="center" width="5%"><input onkeyup="calc(this);" type="text" name="rate" min="0" max="100" onchange="calc(this);"></td>

    <td align="center" width="15%"><input align="center" type="text" name="total" min="0" max="99999999"></td>

  </tr>

  <tr>

    <th align="center" width="5%">E</th>

    <td align="center" width="10%"><input onkeyup="calc(this);" type="text" name="summ" min="0" max="999999" onchange="calc(this);"></td>

    <th align="center" width="5%">F</th>

    <td align="center" width="15%"><input align="center" type="text" name="total" min="0" max="99999999"></td>

  </tr>

</table>





UPDATE
I wrote a function that was supposed to count the values ​​for data from lines with variables e and f. But unfortunately it lacks to be performed for all rows? I'm not shure how set numbers of rows to serve?






function calc(element) {

  var row = element.parentNode.parentNode;

  var a = row.cells[0].getElementsByTagName('input')[0].value;

  var b = row.cells[1].getElementsByTagName('input')[0].value;

  var c = row.cells[2].getElementsByTagName('input')[0].value;



  // Getting the last row

//  var lastRow = document.getElementById("last-values");



  // Then, retrieving e and f

  //var e = lastRow.cells[1].getElementsByTagName('input')[0].value;

  //var f = lastRow.cells[3].getElementsByTagName('input')[0].value;



  var res = +a + +b * c;



  row.cells[3].getElementsByTagName('input')[0].value = res;

}



function lastEle()

{	

		var y = document.getElementById('e').value;

		var z = document.getElementById('f').value;

		

		var mytable = document.getElementById('myTable');

		var myinputs = mytable.getElementsByTagName('input');

		var rowy = mytable.rows.length;

		

		for (var i = 1; i < mytable.rows.length; i++) {

		

		var tmp = mytable.rows[i].myinputs[3].value;

		var wynik = +y + +z + +tmp;

		mytable.rows[i].myinputs[4].value = wynik;

}

}

 body {

    font-family: "Calibri"; margin:0;}



#inTotal {

	font-weight: bold;

	border-bottom: 2px solid black;

}

.nr {

	font-weight: bold;

}

input {

    border: none;

    background: transparent;

	text-align: center;

}

table, th, td {

    border: 1px solid black;	

    border-collapse: collapse;

	

}

th{

background-color: #b9c1ce;

}

.Left {

	text-align: left;

	margin-left: 5px;

}

<table id="myTable">

<tr class="cipa"> 

<th align="center" width="5%">A</th>    

<th align="center" width="10%">B</th>

<th align="center" width="5%">C</th>

<th align="center" width="15%">D</th>

<th align="center" width="15%">F</th>

</tr>

<tr>                

<td align="center" width="5%"><input onkeyup="calc(this);" type="text" name="quantity" min="1" max="99" onchange="calc(this);"></td>                    

<td align="center" width="10%"><input onkeyup="calc(this);" type="text" name="summ" min="0" max="999999" onchange="calc(this);"></td>                        

<td align="center" width="5%"><input onkeyup="calc(this);" type="text" name="rate" min="0" max="100" onchange="calc(this);"></td>                            

<td align="center" width="15%"><input align="center" type="text" onchange="calc(this);lastEle();" id="ads" name="total" min="0" max="99999999"></td>    

<td align="center" width="15%"><input align="center" type="text" onkeyup="lastEle();" value="3" name="total" min="0" max="99999999"></td>

</tr>

<tr>                

<td align="center" width="5%"><input onkeyup="calc(this);" type="text" name="quantity" min="1" max="99" onchange="calc(this);"></td>                    

<td align="center" width="10%"><input onkeyup="calc(this);" type="text" name="summ" min="0" max="999999" onchange="calc(this);"></td>                        

<td align="center" width="5%"><input onkeyup="calc(this);" type="text" name="rate" min="0" max="100" onchange="calc(this);"></td>                            

<td align="center" width="15%"><input align="center" type="text" onchange="calc(this);lastEle();" name="total" min="0" max="99999999"></td>

<td align="center" width="15%"><input align="center" onkeyup="lastEle();" type="text" name="total" min="0" max="99999999"></td>

</tr>



<tr>

    <!--  e  -->

    <th>e</th>

    <td><input type="text" onkeyup="lastEle();" id="e"  value="" /></td>

    <!--  f  -->

    <th>f</th>

    <td><input type="text" id="f" onkeyup="lastEle();" value="" /></td>

  </tr>              

</table>








javascript html







share|improve this question















I would like the function to return the result of this action on the values ​​from the table below:




a+b*c-(e/f)




This action is worked whithout row with e and f. I found similar problem here but there is no solution for this one special last row. I'm shure how i should get value from e and f inputs. The function shul be workinf for each row - no matter how many of them will be.






function calc(id) {

  var row = id.parentNode.parentNode;

  var a = row.cells[0].getElementsByTagName('input')[0].value;

  var b = row.cells[1].getElementsByTagName('input')[0].value;

  var c = row.cells[2].getElementsByTagName('input')[0].value;

  var e = row.cells[0].getElementsByTagName('input')[1].value; //not working

  var f = row.cells[1].getElementsByTagName('input')[1].value; //not working



  var res = +a + +b * c - (e / f);



  row.cells[3].getElementsByTagName('input')[0].value = res;

}

body {

  font-family: "Calibri";

  margin: 0;

}



#inTotal {

  font-weight: bold;

  border-bottom: 2px solid black;

}



.nr {

  font-weight: bold;

}



input {

  border: none;

  background: transparent;

  text-align: center;

}



table,

th,

td {

  border: 1px solid black;

  border-collapse: collapse;

}



th {

  background-color: #b9c1ce;

}



.Left {

  text-align: left;

  margin-left: 5px;

}

<table id="myTable">

  <tr>

    <th align="center" width="5%">A</th>

    <th align="center" width="10%">B</th>

    <th align="center" width="5%">C</th>

    <th align="center" width="15%">Result</th>

  </tr>

  <tr>

    <td align="center" width="5%"><input onkeyup="calc(this);" type="text" name="quantity" min="1" max="99" onchange="calc(this);"></td>

    <td align="center" width="10%"><input onkeyup="calc(this);" type="text" name="summ" min="0" max="999999" onchange="calc(this);"></td>

    <td align="center" width="5%"><input onkeyup="calc(this);" type="text" name="rate" min="0" max="100" onchange="calc(this);"></td>

    <td align="center" width="15%"><input align="center" type="text" name="total" min="0" max="99999999"></td>

  </tr>

  <tr>

    <td align="center" width="5%"><input onkeyup="calc(this);" type="text" name="quantity" min="1" max="99" onchange="calc(this);"></td>

    <td align="center" width="10%"><input onkeyup="calc(this);" type="text" name="summ" min="0" max="999999" onchange="calc(this);"></td>

    <td align="center" width="5%"><input onkeyup="calc(this);" type="text" name="rate" min="0" max="100" onchange="calc(this);"></td>

    <td align="center" width="15%"><input align="center" type="text" name="total" min="0" max="99999999"></td>

  </tr>

  <tr>

    <th align="center" width="5%">E</th>

    <td align="center" width="10%"><input onkeyup="calc(this);" type="text" name="summ" min="0" max="999999" onchange="calc(this);"></td>

    <th align="center" width="5%">F</th>

    <td align="center" width="15%"><input align="center" type="text" name="total" min="0" max="99999999"></td>

  </tr>

</table>





UPDATE
I wrote a function that was supposed to count the values ​​for data from lines with variables e and f. But unfortunately it lacks to be performed for all rows? I'm not shure how set numbers of rows to serve?






function calc(element) {

  var row = element.parentNode.parentNode;

  var a = row.cells[0].getElementsByTagName('input')[0].value;

  var b = row.cells[1].getElementsByTagName('input')[0].value;

  var c = row.cells[2].getElementsByTagName('input')[0].value;



  // Getting the last row

//  var lastRow = document.getElementById("last-values");



  // Then, retrieving e and f

  //var e = lastRow.cells[1].getElementsByTagName('input')[0].value;

  //var f = lastRow.cells[3].getElementsByTagName('input')[0].value;



  var res = +a + +b * c;



  row.cells[3].getElementsByTagName('input')[0].value = res;

}



function lastEle()

{	

		var y = document.getElementById('e').value;

		var z = document.getElementById('f').value;

		

		var mytable = document.getElementById('myTable');

		var myinputs = mytable.getElementsByTagName('input');

		var rowy = mytable.rows.length;

		

		for (var i = 1; i < mytable.rows.length; i++) {

		

		var tmp = mytable.rows[i].myinputs[3].value;

		var wynik = +y + +z + +tmp;

		mytable.rows[i].myinputs[4].value = wynik;

}

}

 body {

    font-family: "Calibri"; margin:0;}



#inTotal {

	font-weight: bold;

	border-bottom: 2px solid black;

}

.nr {

	font-weight: bold;

}

input {

    border: none;

    background: transparent;

	text-align: center;

}

table, th, td {

    border: 1px solid black;	

    border-collapse: collapse;

	

}

th{

background-color: #b9c1ce;

}

.Left {

	text-align: left;

	margin-left: 5px;

}

<table id="myTable">

<tr class="cipa"> 

<th align="center" width="5%">A</th>    

<th align="center" width="10%">B</th>

<th align="center" width="5%">C</th>

<th align="center" width="15%">D</th>

<th align="center" width="15%">F</th>

</tr>

<tr>                

<td align="center" width="5%"><input onkeyup="calc(this);" type="text" name="quantity" min="1" max="99" onchange="calc(this);"></td>                    

<td align="center" width="10%"><input onkeyup="calc(this);" type="text" name="summ" min="0" max="999999" onchange="calc(this);"></td>                        

<td align="center" width="5%"><input onkeyup="calc(this);" type="text" name="rate" min="0" max="100" onchange="calc(this);"></td>                            

<td align="center" width="15%"><input align="center" type="text" onchange="calc(this);lastEle();" id="ads" name="total" min="0" max="99999999"></td>    

<td align="center" width="15%"><input align="center" type="text" onkeyup="lastEle();" value="3" name="total" min="0" max="99999999"></td>

</tr>

<tr>                

<td align="center" width="5%"><input onkeyup="calc(this);" type="text" name="quantity" min="1" max="99" onchange="calc(this);"></td>                    

<td align="center" width="10%"><input onkeyup="calc(this);" type="text" name="summ" min="0" max="999999" onchange="calc(this);"></td>                        

<td align="center" width="5%"><input onkeyup="calc(this);" type="text" name="rate" min="0" max="100" onchange="calc(this);"></td>                            

<td align="center" width="15%"><input align="center" type="text" onchange="calc(this);lastEle();" name="total" min="0" max="99999999"></td>

<td align="center" width="15%"><input align="center" onkeyup="lastEle();" type="text" name="total" min="0" max="99999999"></td>

</tr>



<tr>

    <!--  e  -->

    <th>e</th>

    <td><input type="text" onkeyup="lastEle();" id="e"  value="" /></td>

    <!--  f  -->

    <th>f</th>

    <td><input type="text" id="f" onkeyup="lastEle();" value="" /></td>

  </tr>              

</table>








function calc(id) {

  var row = id.parentNode.parentNode;

  var a = row.cells[0].getElementsByTagName('input')[0].value;

  var b = row.cells[1].getElementsByTagName('input')[0].value;

  var c = row.cells[2].getElementsByTagName('input')[0].value;

  var e = row.cells[0].getElementsByTagName('input')[1].value; //not working

  var f = row.cells[1].getElementsByTagName('input')[1].value; //not working



  var res = +a + +b * c - (e / f);



  row.cells[3].getElementsByTagName('input')[0].value = res;

}

body {

  font-family: "Calibri";

  margin: 0;

}



#inTotal {

  font-weight: bold;

  border-bottom: 2px solid black;

}



.nr {

  font-weight: bold;

}



input {

  border: none;

  background: transparent;

  text-align: center;

}



table,

th,

td {

  border: 1px solid black;

  border-collapse: collapse;

}



th {

  background-color: #b9c1ce;

}



.Left {

  text-align: left;

  margin-left: 5px;

}

<table id="myTable">

  <tr>

    <th align="center" width="5%">A</th>

    <th align="center" width="10%">B</th>

    <th align="center" width="5%">C</th>

    <th align="center" width="15%">Result</th>

  </tr>

  <tr>

    <td align="center" width="5%"><input onkeyup="calc(this);" type="text" name="quantity" min="1" max="99" onchange="calc(this);"></td>

    <td align="center" width="10%"><input onkeyup="calc(this);" type="text" name="summ" min="0" max="999999" onchange="calc(this);"></td>

    <td align="center" width="5%"><input onkeyup="calc(this);" type="text" name="rate" min="0" max="100" onchange="calc(this);"></td>

    <td align="center" width="15%"><input align="center" type="text" name="total" min="0" max="99999999"></td>

  </tr>

  <tr>

    <td align="center" width="5%"><input onkeyup="calc(this);" type="text" name="quantity" min="1" max="99" onchange="calc(this);"></td>

    <td align="center" width="10%"><input onkeyup="calc(this);" type="text" name="summ" min="0" max="999999" onchange="calc(this);"></td>

    <td align="center" width="5%"><input onkeyup="calc(this);" type="text" name="rate" min="0" max="100" onchange="calc(this);"></td>

    <td align="center" width="15%"><input align="center" type="text" name="total" min="0" max="99999999"></td>

  </tr>

  <tr>

    <th align="center" width="5%">E</th>

    <td align="center" width="10%"><input onkeyup="calc(this);" type="text" name="summ" min="0" max="999999" onchange="calc(this);"></td>

    <th align="center" width="5%">F</th>

    <td align="center" width="15%"><input align="center" type="text" name="total" min="0" max="99999999"></td>

  </tr>

</table>





function calc(id) {

  var row = id.parentNode.parentNode;

  var a = row.cells[0].getElementsByTagName('input')[0].value;

  var b = row.cells[1].getElementsByTagName('input')[0].value;

  var c = row.cells[2].getElementsByTagName('input')[0].value;

  var e = row.cells[0].getElementsByTagName('input')[1].value; //not working

  var f = row.cells[1].getElementsByTagName('input')[1].value; //not working



  var res = +a + +b * c - (e / f);



  row.cells[3].getElementsByTagName('input')[0].value = res;

}

body {

  font-family: "Calibri";

  margin: 0;

}



#inTotal {

  font-weight: bold;

  border-bottom: 2px solid black;

}



.nr {

  font-weight: bold;

}



input {

  border: none;

  background: transparent;

  text-align: center;

}



table,

th,

td {

  border: 1px solid black;

  border-collapse: collapse;

}



th {

  background-color: #b9c1ce;

}



.Left {

  text-align: left;

  margin-left: 5px;

}

<table id="myTable">

  <tr>

    <th align="center" width="5%">A</th>

    <th align="center" width="10%">B</th>

    <th align="center" width="5%">C</th>

    <th align="center" width="15%">Result</th>

  </tr>

  <tr>

    <td align="center" width="5%"><input onkeyup="calc(this);" type="text" name="quantity" min="1" max="99" onchange="calc(this);"></td>

    <td align="center" width="10%"><input onkeyup="calc(this);" type="text" name="summ" min="0" max="999999" onchange="calc(this);"></td>

    <td align="center" width="5%"><input onkeyup="calc(this);" type="text" name="rate" min="0" max="100" onchange="calc(this);"></td>

    <td align="center" width="15%"><input align="center" type="text" name="total" min="0" max="99999999"></td>

  </tr>

  <tr>

    <td align="center" width="5%"><input onkeyup="calc(this);" type="text" name="quantity" min="1" max="99" onchange="calc(this);"></td>

    <td align="center" width="10%"><input onkeyup="calc(this);" type="text" name="summ" min="0" max="999999" onchange="calc(this);"></td>

    <td align="center" width="5%"><input onkeyup="calc(this);" type="text" name="rate" min="0" max="100" onchange="calc(this);"></td>

    <td align="center" width="15%"><input align="center" type="text" name="total" min="0" max="99999999"></td>

  </tr>

  <tr>

    <th align="center" width="5%">E</th>

    <td align="center" width="10%"><input onkeyup="calc(this);" type="text" name="summ" min="0" max="999999" onchange="calc(this);"></td>

    <th align="center" width="5%">F</th>

    <td align="center" width="15%"><input align="center" type="text" name="total" min="0" max="99999999"></td>

  </tr>

</table>





function calc(element) {

  var row = element.parentNode.parentNode;

  var a = row.cells[0].getElementsByTagName('input')[0].value;

  var b = row.cells[1].getElementsByTagName('input')[0].value;

  var c = row.cells[2].getElementsByTagName('input')[0].value;



  // Getting the last row

//  var lastRow = document.getElementById("last-values");



  // Then, retrieving e and f

  //var e = lastRow.cells[1].getElementsByTagName('input')[0].value;

  //var f = lastRow.cells[3].getElementsByTagName('input')[0].value;



  var res = +a + +b * c;



  row.cells[3].getElementsByTagName('input')[0].value = res;

}



function lastEle()

{	

		var y = document.getElementById('e').value;

		var z = document.getElementById('f').value;

		

		var mytable = document.getElementById('myTable');

		var myinputs = mytable.getElementsByTagName('input');

		var rowy = mytable.rows.length;

		

		for (var i = 1; i < mytable.rows.length; i++) {

		

		var tmp = mytable.rows[i].myinputs[3].value;

		var wynik = +y + +z + +tmp;

		mytable.rows[i].myinputs[4].value = wynik;

}

}

 body {

    font-family: "Calibri"; margin:0;}



#inTotal {

	font-weight: bold;

	border-bottom: 2px solid black;

}

.nr {

	font-weight: bold;

}

input {

    border: none;

    background: transparent;

	text-align: center;

}

table, th, td {

    border: 1px solid black;	

    border-collapse: collapse;

	

}

th{

background-color: #b9c1ce;

}

.Left {

	text-align: left;

	margin-left: 5px;

}

<table id="myTable">

<tr class="cipa"> 

<th align="center" width="5%">A</th>    

<th align="center" width="10%">B</th>

<th align="center" width="5%">C</th>

<th align="center" width="15%">D</th>

<th align="center" width="15%">F</th>

</tr>

<tr>                

<td align="center" width="5%"><input onkeyup="calc(this);" type="text" name="quantity" min="1" max="99" onchange="calc(this);"></td>                    

<td align="center" width="10%"><input onkeyup="calc(this);" type="text" name="summ" min="0" max="999999" onchange="calc(this);"></td>                        

<td align="center" width="5%"><input onkeyup="calc(this);" type="text" name="rate" min="0" max="100" onchange="calc(this);"></td>                            

<td align="center" width="15%"><input align="center" type="text" onchange="calc(this);lastEle();" id="ads" name="total" min="0" max="99999999"></td>    

<td align="center" width="15%"><input align="center" type="text" onkeyup="lastEle();" value="3" name="total" min="0" max="99999999"></td>

</tr>

<tr>                

<td align="center" width="5%"><input onkeyup="calc(this);" type="text" name="quantity" min="1" max="99" onchange="calc(this);"></td>                    

<td align="center" width="10%"><input onkeyup="calc(this);" type="text" name="summ" min="0" max="999999" onchange="calc(this);"></td>                        

<td align="center" width="5%"><input onkeyup="calc(this);" type="text" name="rate" min="0" max="100" onchange="calc(this);"></td>                            

<td align="center" width="15%"><input align="center" type="text" onchange="calc(this);lastEle();" name="total" min="0" max="99999999"></td>

<td align="center" width="15%"><input align="center" onkeyup="lastEle();" type="text" name="total" min="0" max="99999999"></td>

</tr>



<tr>

    <!--  e  -->

    <th>e</th>

    <td><input type="text" onkeyup="lastEle();" id="e"  value="" /></td>

    <!--  f  -->

    <th>f</th>

    <td><input type="text" id="f" onkeyup="lastEle();" value="" /></td>

  </tr>              

</table>





function calc(element) {

  var row = element.parentNode.parentNode;

  var a = row.cells[0].getElementsByTagName('input')[0].value;

  var b = row.cells[1].getElementsByTagName('input')[0].value;

  var c = row.cells[2].getElementsByTagName('input')[0].value;



  // Getting the last row

//  var lastRow = document.getElementById("last-values");



  // Then, retrieving e and f

  //var e = lastRow.cells[1].getElementsByTagName('input')[0].value;

  //var f = lastRow.cells[3].getElementsByTagName('input')[0].value;



  var res = +a + +b * c;



  row.cells[3].getElementsByTagName('input')[0].value = res;

}



function lastEle()

{	

		var y = document.getElementById('e').value;

		var z = document.getElementById('f').value;

		

		var mytable = document.getElementById('myTable');

		var myinputs = mytable.getElementsByTagName('input');

		var rowy = mytable.rows.length;

		

		for (var i = 1; i < mytable.rows.length; i++) {

		

		var tmp = mytable.rows[i].myinputs[3].value;

		var wynik = +y + +z + +tmp;

		mytable.rows[i].myinputs[4].value = wynik;

}

}

 body {

    font-family: "Calibri"; margin:0;}



#inTotal {

	font-weight: bold;

	border-bottom: 2px solid black;

}

.nr {

	font-weight: bold;

}

input {

    border: none;

    background: transparent;

	text-align: center;

}

table, th, td {

    border: 1px solid black;	

    border-collapse: collapse;

	

}

th{

background-color: #b9c1ce;

}

.Left {

	text-align: left;

	margin-left: 5px;

}

<table id="myTable">

<tr class="cipa"> 

<th align="center" width="5%">A</th>    

<th align="center" width="10%">B</th>

<th align="center" width="5%">C</th>

<th align="center" width="15%">D</th>

<th align="center" width="15%">F</th>

</tr>

<tr>                

<td align="center" width="5%"><input onkeyup="calc(this);" type="text" name="quantity" min="1" max="99" onchange="calc(this);"></td>                    

<td align="center" width="10%"><input onkeyup="calc(this);" type="text" name="summ" min="0" max="999999" onchange="calc(this);"></td>                        

<td align="center" width="5%"><input onkeyup="calc(this);" type="text" name="rate" min="0" max="100" onchange="calc(this);"></td>                            

<td align="center" width="15%"><input align="center" type="text" onchange="calc(this);lastEle();" id="ads" name="total" min="0" max="99999999"></td>    

<td align="center" width="15%"><input align="center" type="text" onkeyup="lastEle();" value="3" name="total" min="0" max="99999999"></td>

</tr>

<tr>                

<td align="center" width="5%"><input onkeyup="calc(this);" type="text" name="quantity" min="1" max="99" onchange="calc(this);"></td>                    

<td align="center" width="10%"><input onkeyup="calc(this);" type="text" name="summ" min="0" max="999999" onchange="calc(this);"></td>                        

<td align="center" width="5%"><input onkeyup="calc(this);" type="text" name="rate" min="0" max="100" onchange="calc(this);"></td>                            

<td align="center" width="15%"><input align="center" type="text" onchange="calc(this);lastEle();" name="total" min="0" max="99999999"></td>

<td align="center" width="15%"><input align="center" onkeyup="lastEle();" type="text" name="total" min="0" max="99999999"></td>

</tr>



<tr>

    <!--  e  -->

    <th>e</th>

    <td><input type="text" onkeyup="lastEle();" id="e"  value="" /></td>

    <!--  f  -->

    <th>f</th>

    <td><input type="text" id="f" onkeyup="lastEle();" value="" /></td>

  </tr>              

</table>





javascript html




javascript html






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edited Nov 22 at 21:24

























asked Nov 22 at 16:39









simple_code

105




105












  • So when in which moment is problem. Sorry if is a stupid question but i'm trying learning js.
    – simple_code
    Nov 22 at 17:08


















  • So when in which moment is problem. Sorry if is a stupid question but i'm trying learning js.
    – simple_code
    Nov 22 at 17:08
















So when in which moment is problem. Sorry if is a stupid question but i'm trying learning js.
– simple_code
Nov 22 at 17:08




So when in which moment is problem. Sorry if is a stupid question but i'm trying learning js.
– simple_code
Nov 22 at 17:08












1 Answer
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You did this:



<table>

    <tr>

        <td><input type="text" /></td>

        <td><input type="text" /></td>

        <td><input type="text" /></td>

        <td><input type="text" /></td>

    </tr>

</table>


Assuming row points to <tr>, you can access them this way, where x is the (n+1)th cell and y the (n+1)th input data :



row.cells[x].getElementsByTagName('input')[y];


Here, y could only equal 0, because there is only one input element embedded in the td element.
To access the "e and f" row, simply set an id to their row:



<tr id="last-values">

    <!--  e  -->

    <th>e</th>

    <td><input type="text" value="5" /></td>

    <!--  f  -->

    <th>f</th>

    <td><input type="text" value="6" /></td>

  </tr>


Then, rewrite your calc() function:



function calc(element) {

  var row = element.parentNode.parentNode;

  var a = row.cells[0].getElementsByTagName('input')[0].value;

  var b = row.cells[1].getElementsByTagName('input')[0].value;

  var c = row.cells[2].getElementsByTagName('input')[0].value;



  // Getting the last row

  var lastRow = document.getElementById("last-values");



  // Then, retrieving e and f

  var e = lastRow.cells[1].getElementsByTagName('input')[0].value;

  var f = lastRow.cells[3].getElementsByTagName('input')[0].value;



  var res = +a + +b * c - (e / f);



  row.cells[3].getElementsByTagName('input')[0].value = res;

}


Keep in mind that you should write another function if e or f are updated: in this case, you'll have to loop the whole rowset to update the values. I let you write this part.



Below a working snippet (without the part of e and f updating).






function calc(element) {

  var row = element.parentNode.parentNode;

  var lastRow = document.getElementById("last-values");

  var a = row.cells[0].getElementsByTagName('input')[0].value;

  var b = row.cells[1].getElementsByTagName('input')[0].value;

  var c = row.cells[2].getElementsByTagName('input')[0].value;

  var e = lastRow.cells[1].getElementsByTagName('input')[0].value;

  var f = lastRow.cells[3].getElementsByTagName('input')[0].value;





  var res = +a + +b * c - (e / f);



  row.cells[3].getElementsByTagName('input')[0].value = res;

}

table {

  width: 100%;

  border-collapse: collapse;

  table-layout: fixed;

}



table th,

table td {

  border: 1px solid black;

}



table th {

  background: #a0a0a0;

}



table td input {

  display: block;

  width: 100%;

}

<table>

  <tr>

    <th>a</th>

    <th>b</th>

    <th>c</th>

    <th>res</th>

  </tr>

  <tr>

    <!--  a  -->

    <td><input type="text" onKeyUp="calc(this)" /></td>

    <!--  b  -->

    <td><input type="text" onKeyUp="calc(this)" /></td>

    <!--  c  -->

    <td><input type="text" onKeyUp="calc(this)" /></td>

    <!-- res -->

    <td><input type="text" onKeyUp="calc(this)" /></td>

  </tr>

  <tr id="last-values">

    <!--  e  -->

    <th>e</th>

    <td><input type="text" value="5" /></td>

    <!--  f  -->

    <th>f</th>

    <td><input type="text" value="6" /></td>

  </tr>

</table>








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  • I think and understand your concept but do not you think it will look ugly? will it be a bad idea to get values from e and f in this way {var e = document.getElementById('e').value;}
    – simple_code
    Nov 22 at 17:37












  • I would like to retrive e from input next to field with E on gray back-ground and the same way f. E and F they are additional variables to which the above rows must refer in the table
    – simple_code
    Nov 22 at 17:54










  • wonderfull I am very grateful. Now I have to sit down and analyze and draw the appropriate conclusions ;).
    – simple_code
    Nov 22 at 18:25










  • You're welcome! I suggest you to start with introduction to DOM and to keep an eye on the DOM reference. MDN Webdocs are very useful for Javascript/DOM programming. (Note: I remove my comments when a SO question is resolved, unless keeping them is relevant.) Happy coding. :)
    – Amessihel
    Nov 22 at 18:29












  • I am asking you to take a look at the functions for e and f values ​​that I could change when filling the table? I update question
    – simple_code
    Nov 22 at 21:25











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You did this:



<table>

    <tr>

        <td><input type="text" /></td>

        <td><input type="text" /></td>

        <td><input type="text" /></td>

        <td><input type="text" /></td>

    </tr>

</table>


Assuming row points to <tr>, you can access them this way, where x is the (n+1)th cell and y the (n+1)th input data :



row.cells[x].getElementsByTagName('input')[y];


Here, y could only equal 0, because there is only one input element embedded in the td element.
To access the "e and f" row, simply set an id to their row:



<tr id="last-values">

    <!--  e  -->

    <th>e</th>

    <td><input type="text" value="5" /></td>

    <!--  f  -->

    <th>f</th>

    <td><input type="text" value="6" /></td>

  </tr>


Then, rewrite your calc() function:



function calc(element) {

  var row = element.parentNode.parentNode;

  var a = row.cells[0].getElementsByTagName('input')[0].value;

  var b = row.cells[1].getElementsByTagName('input')[0].value;

  var c = row.cells[2].getElementsByTagName('input')[0].value;



  // Getting the last row

  var lastRow = document.getElementById("last-values");



  // Then, retrieving e and f

  var e = lastRow.cells[1].getElementsByTagName('input')[0].value;

  var f = lastRow.cells[3].getElementsByTagName('input')[0].value;



  var res = +a + +b * c - (e / f);



  row.cells[3].getElementsByTagName('input')[0].value = res;

}


Keep in mind that you should write another function if e or f are updated: in this case, you'll have to loop the whole rowset to update the values. I let you write this part.



Below a working snippet (without the part of e and f updating).






function calc(element) {

  var row = element.parentNode.parentNode;

  var lastRow = document.getElementById("last-values");

  var a = row.cells[0].getElementsByTagName('input')[0].value;

  var b = row.cells[1].getElementsByTagName('input')[0].value;

  var c = row.cells[2].getElementsByTagName('input')[0].value;

  var e = lastRow.cells[1].getElementsByTagName('input')[0].value;

  var f = lastRow.cells[3].getElementsByTagName('input')[0].value;





  var res = +a + +b * c - (e / f);



  row.cells[3].getElementsByTagName('input')[0].value = res;

}

table {

  width: 100%;

  border-collapse: collapse;

  table-layout: fixed;

}



table th,

table td {

  border: 1px solid black;

}



table th {

  background: #a0a0a0;

}



table td input {

  display: block;

  width: 100%;

}

<table>

  <tr>

    <th>a</th>

    <th>b</th>

    <th>c</th>

    <th>res</th>

  </tr>

  <tr>

    <!--  a  -->

    <td><input type="text" onKeyUp="calc(this)" /></td>

    <!--  b  -->

    <td><input type="text" onKeyUp="calc(this)" /></td>

    <!--  c  -->

    <td><input type="text" onKeyUp="calc(this)" /></td>

    <!-- res -->

    <td><input type="text" onKeyUp="calc(this)" /></td>

  </tr>

  <tr id="last-values">

    <!--  e  -->

    <th>e</th>

    <td><input type="text" value="5" /></td>

    <!--  f  -->

    <th>f</th>

    <td><input type="text" value="6" /></td>

  </tr>

</table>








share|improve this answer























  • I think and understand your concept but do not you think it will look ugly? will it be a bad idea to get values from e and f in this way {var e = document.getElementById('e').value;}
    – simple_code
    Nov 22 at 17:37












  • I would like to retrive e from input next to field with E on gray back-ground and the same way f. E and F they are additional variables to which the above rows must refer in the table
    – simple_code
    Nov 22 at 17:54










  • wonderfull I am very grateful. Now I have to sit down and analyze and draw the appropriate conclusions ;).
    – simple_code
    Nov 22 at 18:25










  • You're welcome! I suggest you to start with introduction to DOM and to keep an eye on the DOM reference. MDN Webdocs are very useful for Javascript/DOM programming. (Note: I remove my comments when a SO question is resolved, unless keeping them is relevant.) Happy coding. :)
    – Amessihel
    Nov 22 at 18:29












  • I am asking you to take a look at the functions for e and f values ​​that I could change when filling the table? I update question
    – simple_code
    Nov 22 at 21:25















up vote
0
down vote



accepted










You did this:



<table>

    <tr>

        <td><input type="text" /></td>

        <td><input type="text" /></td>

        <td><input type="text" /></td>

        <td><input type="text" /></td>

    </tr>

</table>


Assuming row points to <tr>, you can access them this way, where x is the (n+1)th cell and y the (n+1)th input data :



row.cells[x].getElementsByTagName('input')[y];


Here, y could only equal 0, because there is only one input element embedded in the td element.
To access the "e and f" row, simply set an id to their row:



<tr id="last-values">

    <!--  e  -->

    <th>e</th>

    <td><input type="text" value="5" /></td>

    <!--  f  -->

    <th>f</th>

    <td><input type="text" value="6" /></td>

  </tr>


Then, rewrite your calc() function:



function calc(element) {

  var row = element.parentNode.parentNode;

  var a = row.cells[0].getElementsByTagName('input')[0].value;

  var b = row.cells[1].getElementsByTagName('input')[0].value;

  var c = row.cells[2].getElementsByTagName('input')[0].value;



  // Getting the last row

  var lastRow = document.getElementById("last-values");



  // Then, retrieving e and f

  var e = lastRow.cells[1].getElementsByTagName('input')[0].value;

  var f = lastRow.cells[3].getElementsByTagName('input')[0].value;



  var res = +a + +b * c - (e / f);



  row.cells[3].getElementsByTagName('input')[0].value = res;

}


Keep in mind that you should write another function if e or f are updated: in this case, you'll have to loop the whole rowset to update the values. I let you write this part.



Below a working snippet (without the part of e and f updating).






function calc(element) {

  var row = element.parentNode.parentNode;

  var lastRow = document.getElementById("last-values");

  var a = row.cells[0].getElementsByTagName('input')[0].value;

  var b = row.cells[1].getElementsByTagName('input')[0].value;

  var c = row.cells[2].getElementsByTagName('input')[0].value;

  var e = lastRow.cells[1].getElementsByTagName('input')[0].value;

  var f = lastRow.cells[3].getElementsByTagName('input')[0].value;





  var res = +a + +b * c - (e / f);



  row.cells[3].getElementsByTagName('input')[0].value = res;

}

table {

  width: 100%;

  border-collapse: collapse;

  table-layout: fixed;

}



table th,

table td {

  border: 1px solid black;

}



table th {

  background: #a0a0a0;

}



table td input {

  display: block;

  width: 100%;

}

<table>

  <tr>

    <th>a</th>

    <th>b</th>

    <th>c</th>

    <th>res</th>

  </tr>

  <tr>

    <!--  a  -->

    <td><input type="text" onKeyUp="calc(this)" /></td>

    <!--  b  -->

    <td><input type="text" onKeyUp="calc(this)" /></td>

    <!--  c  -->

    <td><input type="text" onKeyUp="calc(this)" /></td>

    <!-- res -->

    <td><input type="text" onKeyUp="calc(this)" /></td>

  </tr>

  <tr id="last-values">

    <!--  e  -->

    <th>e</th>

    <td><input type="text" value="5" /></td>

    <!--  f  -->

    <th>f</th>

    <td><input type="text" value="6" /></td>

  </tr>

</table>








share|improve this answer























  • I think and understand your concept but do not you think it will look ugly? will it be a bad idea to get values from e and f in this way {var e = document.getElementById('e').value;}
    – simple_code
    Nov 22 at 17:37












  • I would like to retrive e from input next to field with E on gray back-ground and the same way f. E and F they are additional variables to which the above rows must refer in the table
    – simple_code
    Nov 22 at 17:54










  • wonderfull I am very grateful. Now I have to sit down and analyze and draw the appropriate conclusions ;).
    – simple_code
    Nov 22 at 18:25










  • You're welcome! I suggest you to start with introduction to DOM and to keep an eye on the DOM reference. MDN Webdocs are very useful for Javascript/DOM programming. (Note: I remove my comments when a SO question is resolved, unless keeping them is relevant.) Happy coding. :)
    – Amessihel
    Nov 22 at 18:29












  • I am asking you to take a look at the functions for e and f values ​​that I could change when filling the table? I update question
    – simple_code
    Nov 22 at 21:25













up vote
0
down vote



accepted







up vote
0
down vote



accepted






You did this:



<table>

    <tr>

        <td><input type="text" /></td>

        <td><input type="text" /></td>

        <td><input type="text" /></td>

        <td><input type="text" /></td>

    </tr>

</table>


Assuming row points to <tr>, you can access them this way, where x is the (n+1)th cell and y the (n+1)th input data :



row.cells[x].getElementsByTagName('input')[y];


Here, y could only equal 0, because there is only one input element embedded in the td element.
To access the "e and f" row, simply set an id to their row:



<tr id="last-values">

    <!--  e  -->

    <th>e</th>

    <td><input type="text" value="5" /></td>

    <!--  f  -->

    <th>f</th>

    <td><input type="text" value="6" /></td>

  </tr>


Then, rewrite your calc() function:



function calc(element) {

  var row = element.parentNode.parentNode;

  var a = row.cells[0].getElementsByTagName('input')[0].value;

  var b = row.cells[1].getElementsByTagName('input')[0].value;

  var c = row.cells[2].getElementsByTagName('input')[0].value;



  // Getting the last row

  var lastRow = document.getElementById("last-values");



  // Then, retrieving e and f

  var e = lastRow.cells[1].getElementsByTagName('input')[0].value;

  var f = lastRow.cells[3].getElementsByTagName('input')[0].value;



  var res = +a + +b * c - (e / f);



  row.cells[3].getElementsByTagName('input')[0].value = res;

}


Keep in mind that you should write another function if e or f are updated: in this case, you'll have to loop the whole rowset to update the values. I let you write this part.



Below a working snippet (without the part of e and f updating).






function calc(element) {

  var row = element.parentNode.parentNode;

  var lastRow = document.getElementById("last-values");

  var a = row.cells[0].getElementsByTagName('input')[0].value;

  var b = row.cells[1].getElementsByTagName('input')[0].value;

  var c = row.cells[2].getElementsByTagName('input')[0].value;

  var e = lastRow.cells[1].getElementsByTagName('input')[0].value;

  var f = lastRow.cells[3].getElementsByTagName('input')[0].value;





  var res = +a + +b * c - (e / f);



  row.cells[3].getElementsByTagName('input')[0].value = res;

}

table {

  width: 100%;

  border-collapse: collapse;

  table-layout: fixed;

}



table th,

table td {

  border: 1px solid black;

}



table th {

  background: #a0a0a0;

}



table td input {

  display: block;

  width: 100%;

}

<table>

  <tr>

    <th>a</th>

    <th>b</th>

    <th>c</th>

    <th>res</th>

  </tr>

  <tr>

    <!--  a  -->

    <td><input type="text" onKeyUp="calc(this)" /></td>

    <!--  b  -->

    <td><input type="text" onKeyUp="calc(this)" /></td>

    <!--  c  -->

    <td><input type="text" onKeyUp="calc(this)" /></td>

    <!-- res -->

    <td><input type="text" onKeyUp="calc(this)" /></td>

  </tr>

  <tr id="last-values">

    <!--  e  -->

    <th>e</th>

    <td><input type="text" value="5" /></td>

    <!--  f  -->

    <th>f</th>

    <td><input type="text" value="6" /></td>

  </tr>

</table>








share|improve this answer














You did this:



<table>

    <tr>

        <td><input type="text" /></td>

        <td><input type="text" /></td>

        <td><input type="text" /></td>

        <td><input type="text" /></td>

    </tr>

</table>


Assuming row points to <tr>, you can access them this way, where x is the (n+1)th cell and y the (n+1)th input data :



row.cells[x].getElementsByTagName('input')[y];


Here, y could only equal 0, because there is only one input element embedded in the td element.
To access the "e and f" row, simply set an id to their row:



<tr id="last-values">

    <!--  e  -->

    <th>e</th>

    <td><input type="text" value="5" /></td>

    <!--  f  -->

    <th>f</th>

    <td><input type="text" value="6" /></td>

  </tr>


Then, rewrite your calc() function:



function calc(element) {

  var row = element.parentNode.parentNode;

  var a = row.cells[0].getElementsByTagName('input')[0].value;

  var b = row.cells[1].getElementsByTagName('input')[0].value;

  var c = row.cells[2].getElementsByTagName('input')[0].value;



  // Getting the last row

  var lastRow = document.getElementById("last-values");



  // Then, retrieving e and f

  var e = lastRow.cells[1].getElementsByTagName('input')[0].value;

  var f = lastRow.cells[3].getElementsByTagName('input')[0].value;



  var res = +a + +b * c - (e / f);



  row.cells[3].getElementsByTagName('input')[0].value = res;

}


Keep in mind that you should write another function if e or f are updated: in this case, you'll have to loop the whole rowset to update the values. I let you write this part.



Below a working snippet (without the part of e and f updating).






function calc(element) {

  var row = element.parentNode.parentNode;

  var lastRow = document.getElementById("last-values");

  var a = row.cells[0].getElementsByTagName('input')[0].value;

  var b = row.cells[1].getElementsByTagName('input')[0].value;

  var c = row.cells[2].getElementsByTagName('input')[0].value;

  var e = lastRow.cells[1].getElementsByTagName('input')[0].value;

  var f = lastRow.cells[3].getElementsByTagName('input')[0].value;





  var res = +a + +b * c - (e / f);



  row.cells[3].getElementsByTagName('input')[0].value = res;

}

table {

  width: 100%;

  border-collapse: collapse;

  table-layout: fixed;

}



table th,

table td {

  border: 1px solid black;

}



table th {

  background: #a0a0a0;

}



table td input {

  display: block;

  width: 100%;

}

<table>

  <tr>

    <th>a</th>

    <th>b</th>

    <th>c</th>

    <th>res</th>

  </tr>

  <tr>

    <!--  a  -->

    <td><input type="text" onKeyUp="calc(this)" /></td>

    <!--  b  -->

    <td><input type="text" onKeyUp="calc(this)" /></td>

    <!--  c  -->

    <td><input type="text" onKeyUp="calc(this)" /></td>

    <!-- res -->

    <td><input type="text" onKeyUp="calc(this)" /></td>

  </tr>

  <tr id="last-values">

    <!--  e  -->

    <th>e</th>

    <td><input type="text" value="5" /></td>

    <!--  f  -->

    <th>f</th>

    <td><input type="text" value="6" /></td>

  </tr>

</table>








function calc(element) {

  var row = element.parentNode.parentNode;

  var lastRow = document.getElementById("last-values");

  var a = row.cells[0].getElementsByTagName('input')[0].value;

  var b = row.cells[1].getElementsByTagName('input')[0].value;

  var c = row.cells[2].getElementsByTagName('input')[0].value;

  var e = lastRow.cells[1].getElementsByTagName('input')[0].value;

  var f = lastRow.cells[3].getElementsByTagName('input')[0].value;





  var res = +a + +b * c - (e / f);



  row.cells[3].getElementsByTagName('input')[0].value = res;

}

table {

  width: 100%;

  border-collapse: collapse;

  table-layout: fixed;

}



table th,

table td {

  border: 1px solid black;

}



table th {

  background: #a0a0a0;

}



table td input {

  display: block;

  width: 100%;

}

<table>

  <tr>

    <th>a</th>

    <th>b</th>

    <th>c</th>

    <th>res</th>

  </tr>

  <tr>

    <!--  a  -->

    <td><input type="text" onKeyUp="calc(this)" /></td>

    <!--  b  -->

    <td><input type="text" onKeyUp="calc(this)" /></td>

    <!--  c  -->

    <td><input type="text" onKeyUp="calc(this)" /></td>

    <!-- res -->

    <td><input type="text" onKeyUp="calc(this)" /></td>

  </tr>

  <tr id="last-values">

    <!--  e  -->

    <th>e</th>

    <td><input type="text" value="5" /></td>

    <!--  f  -->

    <th>f</th>

    <td><input type="text" value="6" /></td>

  </tr>

</table>





function calc(element) {

  var row = element.parentNode.parentNode;

  var lastRow = document.getElementById("last-values");

  var a = row.cells[0].getElementsByTagName('input')[0].value;

  var b = row.cells[1].getElementsByTagName('input')[0].value;

  var c = row.cells[2].getElementsByTagName('input')[0].value;

  var e = lastRow.cells[1].getElementsByTagName('input')[0].value;

  var f = lastRow.cells[3].getElementsByTagName('input')[0].value;





  var res = +a + +b * c - (e / f);



  row.cells[3].getElementsByTagName('input')[0].value = res;

}

table {

  width: 100%;

  border-collapse: collapse;

  table-layout: fixed;

}



table th,

table td {

  border: 1px solid black;

}



table th {

  background: #a0a0a0;

}



table td input {

  display: block;

  width: 100%;

}

<table>

  <tr>

    <th>a</th>

    <th>b</th>

    <th>c</th>

    <th>res</th>

  </tr>

  <tr>

    <!--  a  -->

    <td><input type="text" onKeyUp="calc(this)" /></td>

    <!--  b  -->

    <td><input type="text" onKeyUp="calc(this)" /></td>

    <!--  c  -->

    <td><input type="text" onKeyUp="calc(this)" /></td>

    <!-- res -->

    <td><input type="text" onKeyUp="calc(this)" /></td>

  </tr>

  <tr id="last-values">

    <!--  e  -->

    <th>e</th>

    <td><input type="text" value="5" /></td>

    <!--  f  -->

    <th>f</th>

    <td><input type="text" value="6" /></td>

  </tr>

</table>






share|improve this answer














share|improve this answer



share|improve this answer








edited Nov 22 at 18:20

























answered Nov 22 at 17:28









Amessihel

1,9241623




1,9241623












  • I think and understand your concept but do not you think it will look ugly? will it be a bad idea to get values from e and f in this way {var e = document.getElementById('e').value;}
    – simple_code
    Nov 22 at 17:37












  • I would like to retrive e from input next to field with E on gray back-ground and the same way f. E and F they are additional variables to which the above rows must refer in the table
    – simple_code
    Nov 22 at 17:54










  • wonderfull I am very grateful. Now I have to sit down and analyze and draw the appropriate conclusions ;).
    – simple_code
    Nov 22 at 18:25










  • You're welcome! I suggest you to start with introduction to DOM and to keep an eye on the DOM reference. MDN Webdocs are very useful for Javascript/DOM programming. (Note: I remove my comments when a SO question is resolved, unless keeping them is relevant.) Happy coding. :)
    – Amessihel
    Nov 22 at 18:29












  • I am asking you to take a look at the functions for e and f values ​​that I could change when filling the table? I update question
    – simple_code
    Nov 22 at 21:25


















  • I think and understand your concept but do not you think it will look ugly? will it be a bad idea to get values from e and f in this way {var e = document.getElementById('e').value;}
    – simple_code
    Nov 22 at 17:37












  • I would like to retrive e from input next to field with E on gray back-ground and the same way f. E and F they are additional variables to which the above rows must refer in the table
    – simple_code
    Nov 22 at 17:54










  • wonderfull I am very grateful. Now I have to sit down and analyze and draw the appropriate conclusions ;).
    – simple_code
    Nov 22 at 18:25










  • You're welcome! I suggest you to start with introduction to DOM and to keep an eye on the DOM reference. MDN Webdocs are very useful for Javascript/DOM programming. (Note: I remove my comments when a SO question is resolved, unless keeping them is relevant.) Happy coding. :)
    – Amessihel
    Nov 22 at 18:29












  • I am asking you to take a look at the functions for e and f values ​​that I could change when filling the table? I update question
    – simple_code
    Nov 22 at 21:25
















I think and understand your concept but do not you think it will look ugly? will it be a bad idea to get values from e and f in this way {var e = document.getElementById('e').value;}
– simple_code
Nov 22 at 17:37






I think and understand your concept but do not you think it will look ugly? will it be a bad idea to get values from e and f in this way {var e = document.getElementById('e').value;}
– simple_code
Nov 22 at 17:37














I would like to retrive e from input next to field with E on gray back-ground and the same way f. E and F they are additional variables to which the above rows must refer in the table
– simple_code
Nov 22 at 17:54




I would like to retrive e from input next to field with E on gray back-ground and the same way f. E and F they are additional variables to which the above rows must refer in the table
– simple_code
Nov 22 at 17:54












wonderfull I am very grateful. Now I have to sit down and analyze and draw the appropriate conclusions ;).
– simple_code
Nov 22 at 18:25




wonderfull I am very grateful. Now I have to sit down and analyze and draw the appropriate conclusions ;).
– simple_code
Nov 22 at 18:25












You're welcome! I suggest you to start with introduction to DOM and to keep an eye on the DOM reference. MDN Webdocs are very useful for Javascript/DOM programming. (Note: I remove my comments when a SO question is resolved, unless keeping them is relevant.) Happy coding. :)
– Amessihel
Nov 22 at 18:29






You're welcome! I suggest you to start with introduction to DOM and to keep an eye on the DOM reference. MDN Webdocs are very useful for Javascript/DOM programming. (Note: I remove my comments when a SO question is resolved, unless keeping them is relevant.) Happy coding. :)
– Amessihel
Nov 22 at 18:29














I am asking you to take a look at the functions for e and f values ​​that I could change when filling the table? I update question
– simple_code
Nov 22 at 21:25




I am asking you to take a look at the functions for e and f values ​​that I could change when filling the table? I update question
– simple_code
Nov 22 at 21:25


















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