regex - get numbers after certain character string

Question

I have a text string that can be any number of characters that I would like to attach an order number to the end. Then I can pluck off the order number when I need to use it

Answer 1

I see no need for regex for this:

var str="aijfoi aodsifj adofija afdoiajd?order_num=3216545";
var n=str.split("?");

n will then be an array, where index 0 is before the ? and index 1 is after.

Another example:

var str="aijfoi aodsifj adofija afdoiajd?order_num=3216545";
var n=str.split("?order_num=");

Will give you the result: n[0] = aijfoi aodsifj adofija afdoiajd and n[1] = 3216545