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Use Jquery selector to calculate the total of a certain column and a row in the table_jquery

WBOYOriginal: 2016-05-16 16:39:421555browse

It is very convenient to use Jquery selector to calculate the total of a certain column or row in the table. The following is an example of calculating row totals:

Core algorithm:

$('#tableId tr').each(function() { 
$(this).find('td:eq(columnIndex)').each(function() { 
totalAmount += parseFloat($(this).text());
})
});

The following is the case code

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> 
<html xmlns="http://www.w3.org/1999/xhtml"> 
<head> 
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> 
<title>Jquery计算table行合计</title> 
<script id="jquery_183" type="text/javascript" class="library" src="http://runjs.cn/js/sandbox/jquery/jquery-1.8.3.min.js"></script> 
<script type="text/javascript"> 
$(document).ready(function() { 

var totalRow = 0 
$('#mytable tr').each(function() { 
$(this).find('td:eq(2)').each(function(){ 
totalRow += parseFloat($(this).text()); 
}); 
}); 

$('#totalRow').append('<td>合计</td><td></td><td>'+totalRow+'</td><td></td>'); 
}); 
</script> 

</head> 
<body style="width:100%; height:100%;"> 
<table id="mytable" border="1" width="37%"> 
<thead> 
</thead> 
<tr> 
<td width="63" >11</td> 
<td width="68" >12</td> 
<td width="62" >13</td> 
<td width="75" >14</td> 
</tr> 
<tr> 
<td width="63" >21</td> 
<td width="68" >22</td> 
<td width="62" >23</td> 
<td width="75" >24</td> 
</tr> 
<tr id="totalRow"></tr> 
</table> 
</body> 
</html>

Rendering:

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