Extract a number from a string (JavaScript)

Question

I have a string in JavaScript like #box2 and I just want the 2 from it.

I tried:

var thestring = $(this).attr(\'href\');
var          


        

Answer 1

Use this one-line code to get the first number in a string without getting errors:

var myInt = parseInt(myString.replace(/^[^0-9]+/, ''), 10);