Question

I want to do some math like plus, minus etc. with decimal values.

So i wrote two functions;

function to_decimal(i){
    var $dec = parseFloat(i);
    return $dec.toFixed(2);
}

function calc_price(){
    var $t = $('#sub_total .total').text();
    var $total = to_decimal($t);

    $('#price_list ul li').each(function(){
        var $p = to_decimal($(this).find('.item_price').text());
        $total = $total + $p;
    });

    $t = $('#sub_total .total').text($total);
}

But these functions not working correctly i think because the result is returning string like 0.0010.30

Where is the problem?

Answer 1

You need to add a + infront of that statement and you’re fine:

return +$dec.toFixed(2);

That will convert the string into a number. If the string cannot get converted, it’ll return the NaN value.