A Small JavaScript U.S. Dollar Formatter
If you're like me and work on a lot of e-commerce sites, I'm sure you have come across the need to have a simple function to convert a number to a U.S. Dollar formatted string. If you have scoured Google looking for something, I'm sure you've come across the plethora of "currency" formatting libraries/functions out there. The problem is (at least with me) is that all these functions seem to be large, complicated, monstorous libraries that give you the ability to convert a number into a gazillion different localized currencies. That's fine and dandy if your customer plans on going global, but what if they just want to sell things in the U.S.? That pretty much sums up the majority of my customers.
I've come up with a very simple JavaScript prototype that will convert a number into a nice U.S. Dollar formated string. This function will add the thousands seprator (comma), add the dollar sign ($), add two decimal places and handle negative numbers.
