Javascript Regex Issue

Question

I'm trying to build a regex to test if the referrer contains a certain url (but includes query parameters etc)

Apologies if it's bad but it's my first attempt:

(ftp|http|https):\/\/urlhere\.com\/directoryhere(\?|/[^-+(a-zA-Z)]|$)

It works perfectly on here: http://gskinner.com/RegExr/

But when I try it in in JavaScript/Firebug using:

document.referrer.match(/(ftp|http|https):\/\/urlhere\.com\/directoryhere(\?|/[^-+(a-zA-Z)]|$)/gi);

I get the error:

SyntaxError: unterminated parenthetical

Any help appreciated.

manojlds · Accepted Answer · 2011-05-30 03:02:38Z

1

There is a / which is unescaped after directoryhere - (\?|/[

(ftp|http|https):\/\/urlhere\.com\/directoryhere(\?|\/[^-+(a-zA-Z)]|$)

answered May 30, 2011 at 3:02

manojlds

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1 Comment

Thanks, used your pattern with the below answer also.

Arun P Johny · Accepted Answer · 2011-05-30 03:04:26Z

0

You have missed escape one / before [^-+(a-zA-Z)]

Try

document.referrer.match(/(ftp|http|https):\/\/urlhere\.com\/directoryhere(\?|\/[^-+(a-zA-Z)]|$)/gi);

answered May 30, 2011 at 3:04

Arun P Johny

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That just returns null though? Should it not return false?

what does document.referrer returns in your case?