Question

I’m looking for the shortest/easiest way to achieve this.

var savings = <?php echo $list_price ?> - discount_price;

savings: 1.00

$list_price: '$10.00';
discount_price: '$9.00';

Cheers.

Answer 1

var savings = parseFloat('<?php echo $list_price ?>'.substr(1)) -
  parseFloat(discount_price.substr(1));

This parses the string as a number, skipping the first characters (dollar).