how to calculate the column wise total of a row

Question

1.00/5 (1 vote)

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I need to display the total of the columns in the total column

on changing the values the total have to calculate automatically and display in the total column

Here is my code please Guide using javascript onblur

PHP

<?php
while($res=mysql_fetch_array($gettimesheetentries)){?>
<tr>
<td><input type="text" name="data1" id="data1" size="10" value="<?php echo $res['data1'];?>" ></td>
<td><input type="text" name="data2" id="data2" size="10" value="<?php echo $res['data2'];?>" ></td>
<td><input type="text" name="data3" id="data3" size="10" value="<?php echo $res['data3'];?>" ></td>
<td><input type="text" name="data4" id="data4" size="10" value="<?php echo $res['data4'];?>" ></td>
<td><input type="text" name="total" id="total" size="10" ></td>
</tr>
 <?php } ?>

Posted 11-Jun-15 1:23am

Bensingh

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ZurdoDev 11-Jun-15 8:55am

There's no magic way to do it, you'll have to write code to get each value and then add it all up.

2 solutions

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Member 11758806 · Accepted Answer · 2015-06-11T03:00:00

Solution 1

select sum(columname) As col from [tablename];

Posted 11-Jun-15 3:00am

Member 11758806

Peter Leow · Accepted Answer · 2015-06-11T05:27:00

The total column cell should not be editable, so a plain text cell will do

<td class="total"></td>

then, use jQuery to calculate and update the row sum either onload or onblur:

XML

<head>
<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.11.3/jquery.min.js"></script>
<script>
$(document).ready(function(){
    $("input").each(function() {

        var that = $(this);

        // sum and display total column
        sumUp(that);
        
        // bind onblur to each input text cell
        $(this).blur(function(){
            sumUp(that);
        });
    });
});

function sumUp(obj) {
   var sum = 0;
   var focusedRow = obj.closest('tr');

   focusedRow.find('input:text').each( function(){
        sum += parseFloat(this.value);
   });

   focusedRow.find('td.total').html(sum);
}
</script>
</head>

Reference: https://learn.jquery.com/events/event-basics/[^]