How do I get the YouTube video ID from a URL?

Question

I want to get the v=id from YouTube’s URL with JavaScript (no jQuery, pure JavaScript).

Example YouTube URL formats

http://www.youtube.c

Answer 1

I have summed up all the suggestions and here is the universal and short answer to this question:

if(url.match('http://(www.)?youtube|youtu\.be')){
    youtube_id=url.split(/v\/|v=|youtu\.be\//)[1].split(/[?&]/)[0];
}