How to convert a currency string to a double with jQuery or Javascript?

Question

I have a text box that will have a currency string in it that I then need to convert that string to a double to perform some operations on it.

\"$1,1

Answer 1

Remove all non dot / digits:

var currency = "-$4,400.50";
var number = Number(currency.replace(/[^0-9.-]+/g,""));