How to sum a value in array using jquery

Question

I want to push and plus value in array. I tried it but it is giving 'NaN'. I think it can be done by defining array type to integer. Can it is possible. Fiddle here.

var total=[];
$('.check').each(function(index, element) {
    $(this).find('div').each(function(index, element) {
        total[index]+= parseInt($(this).text())
    });
});

$('.update').find('div').each(function(index, element) {
    $(this).text(total[index])
});

Well you're using += on an empty array, so it's trying to take nothing and add to it, hence NaN — tymeJV
– tymeJV, Commented Sep 27, 2013 at 20:04

Jason P · Accepted Answer · 2013-09-27 20:06:09Z

6

You're trying to add to nothing.

Here's one solution:

total[index] = (total[index] || 0) + parseInt($(this).text())

http://jsfiddle.net/yfC5Z/

answered Sep 27, 2013 at 20:06

Jason P

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DontVoteMeDown · Accepted Answer · 2013-09-27 20:05:59Z

4

Try this:

$(this).find('div').each(function(index, element) {
    if (total[index] == undefined) total[index] = 0;
    total[index]+= parseInt($(this).text())
});

answered Sep 27, 2013 at 20:05

DontVoteMeDown

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