javascript parse float error

Question

I am trying to get sum of rows of my table:

td1 val = $5,000.00; td2 val = $3000.00;

And I am using the following code:

Answer 1

If you add $ to the value, it is no longer an integer, and can no longer be calculated with.

Trying to make the formatted value back into a number is a bad idea. You would have to cater for different currency symbols, different formattings (e.g. 1.000,00) and so on.

The very best way would be to store the original numeric value in a separate attribute. If using HTML 5, you could use jQuery's data() for it:

$1.25
....

var totalnum = 0;
$('.num').each(function(){
  totalnum+= parseFloat($(this).data("value"));
});
$('.total_num').html(totalnum);

this way, you separate the formatted result from the numeric value, which saves a lot of trouble.