How to extract decimal number from string using JavaScript

Question

I want to extract decimal number 265.12 or 0.0 from alphanumeric string (say amount) having value $265.12+ or $265.12- or $0.0+ or $0.0- and use it apply struts logic tag in JSP. Not sure how to extract number maybe with help of JavaScript.

Answer 1

You can use regex like this,

Live Demo

var amount = "$265.12+";
var doublenumber = Number(amount.replace(/[^0-9\.]+/g,""));