How to Extract a YouTube Video ID from its URL Using JavaScript?

Retrieving YouTube Video ID from URL in JavaScript

Problem:

Obtain the video ID (e.g., "u8nQa1cJyX8") from a given YouTube URL in JavaScript.

Enhanced Regular Expression:

To account for various YouTube URL formats, here is an enhanced regular expression:

function youtube_parser(url) {
  var regExp = /^.*((youtu.be\/)|(v\/)|(\/u\/\w\/)|(embed\/)|(watch\?))\??v?=?([^#&?]*).*/;
  var match = url.match(regExp);
  return (match && match[7].length == 11) ? match[7] : false;
}

This expression supports the following URL formats:

• http://www.youtube.com/watch?v=0zM3nApSvMg&feature=feedrec_grec_index
• http://www.youtube.com/user/IngridMichaelsonVEVO#p/a/u/1/QdK8U-VIH_o
• http://www.youtube.com/v/0zM3nApSvMg?fs=1&hl=en_US&rel=0
• http://www.youtube.com/watch?v=0zM3nApSvMg#t=0m10s
• http://www.youtube.com/embed/0zM3nApSvMg?rel=0
• http://www.youtube.com/watch?v=0zM3nApSvMg
• http://youtu.be/0zM3nApSvMg

Example:

var url = 'https://www.youtube.com/watch?v=u8nQa1cJyX8';
var videoId = youtube_parser(url);
console.log(videoId);  // Output: u8nQa1cJyX8

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