Question

I am trying to find the generic links in strings. I’ve found a very handy regex on RegExr, in the community expressions:

(https?://)?(www\.)?([a-zA-Z0-9_%]*)\b\.[a-z]{2,4}(\.[a-z]{2})?((/[a-zA-Z0-9_%]*)+)?(\.[a-z]*)?(:\d{1,5})?

I tried to use it and it returns null, although the same string tested on RegExr works fine:

var linkRegEx:RegExp = new RegExp("(https?://)?(www\.)?([a-zA-Z0-9_%]*)\b\.[a-z]{2,4}(\.[a-z]{2})?((/[a-zA-Z0-9_%]*)+)?(\.[a-z]*)?(:\d{1,5})?","g");
var link:String = 'generic links: www.google.com http://www.google.com  google.com';
trace(linkRegEx.exec(link));//traces null

Is there anything I’m missing ?

Answer 1

you need to double the backslashes when you’re using new RegExp. you might want to use the literal syntax, which doesn’t impose such a requirement (assuming AS3 admits this syntax, I just know JS.