AS3 Regex test for URL

Question

I want to check if a string contains a URL.

var string:String = "Arbitrary amount of random text before and after.<br/><br/>http://www.somdomain.co.uk<br/><br/>Tel: 0123 456 789<br/>";

var pattern:RegExp = new RegExp("(http|ftp|https):\/\/[\w\-_]+(\.[\w\-_]+)+([\w\-\.,@?^=%&:/~\+#]*[\w\-\@?^=%&/~\+#])?");

ExternalInterface.call('console.log',pattern.test(string));

This outputs false to my console, whereas when I feed the regex and string into http://gskinner.com/RegExr/, the url is found.

What am I doing wrong and how do I fix it?

zzzzBov · Accepted Answer · 2011-09-21 16:53:50Z

1

I just escaped a couple extra / and it started working. Also, I generally like to use the regex literal notation to create regexes as it gives you better syntax highlighting than converting a string to a regex in the new Regex():

var pattern:RegExp = /(http|ftp|https):\/\/[\w\-_]+(\.[\w\-_]+)+([\w\-\.,@?^=%&:\/~\+#]*[\w\-\@?^=%&\/~\+#])?/;

edited Sep 21, 2011 at 16:53

zzzzBov

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answered Sep 21, 2011 at 16:39

Jacob Eggers

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Richard Parnaby-King Over a year ago

This is the first time I have used RegExp in AS3. This worked brilliantly, thanks :)

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