What would be the regex to get the view code from youtube urls?

I just need to get th开发者_开发技巧e view code from youtube urls. The api is returning back strings that look like this:

http:\/\/www.youtube.com\/watch?v=XODUrTtvZks&feature=youtube_gdata_player

I need to get this part:

XODUrTtvZks

from the above, keep in mind that sometimes there may be additional parameters after the v=something like:

&feature=youtube_gdata_player

and sometimes there may not be. Can someone please provide the regex that would work in this situation and an example of how to use it using javascript?

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You can use /v=([^&]+)/ and get the match at offset 1.

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This snippet only matches on URL's from youtube.com:

var url = 'http://www.youtube.com/watch?v=XODUrTtvZks&feature=youtube_gdata_player';
var matches = url.match(/^http[s]?:\/\/www.youtube.com\/watch\?\s*v=([^&]+)/i);

if (matches) {
    var videoID = matches[1];
    // do stuff
}

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You can use an online tool called RegExr to get your regular expression ,[http://gskinner.com/RegExr/].

Regards Rahul

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This snippet is from Google’s own parser at closure:

function getIdFromUrl(url) {
    return /https?:\/\/(?:[a-zA_Z]{2,3}.)?(?:youtube\.com\/watch\?)((?:[\w\d\-\_\=]+&(?:amp;)?)*v(?:<[A-Z]+>)?=([0-9a-zA-Z\-\_]+))/i.exec(url)[2];
}

You can see it here:

http://code.google.com/p/closure-library/source/browse/trunk/closure/goog/ui/media/youtube.js?r=1221#246