Question

This one’s just weird to me. Some little syntax error or something. Simply adding the value of two variables and appending them to a third.

var total = 0;

input.each(function(){

    var thiis = $(this),
        cost  = thiis.attr('data-cost');

    if (thiis.prop('checked')){

        total = total + cost;
    } else {

        total = total - cost;
    }
}

So if cost = 5 and the input is checked then total equal 5. Instead, I’m getting 05.

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Update:

Word is that the values arn’t integers, so they’re appending. Instead of having to do some fancy string-integer flip, is there a way for me to grab the data attribute as an integer from the get-go?

Thanks!

Answer 1

you need an integer cast if somewhere these vars are casted as strings, which is the reason for the incorect result.

and you could do just total += parseInt(each);