JS implements obtaining the key instance of youtube from the connection_javascript skills

The example in this article describes how JS obtains the youtube key from the connection. Share it with everyone for your reference. The specific analysis is as follows:

This code demonstrates how to intercept a substring from a string

// Example link:
// <a id="myLink" href="http://www.youtube.com/watch&#63;v=cyRqR56aCKc&feature=PlayList&p=00000000000&index=0&playnext=1">Youtube link</a>
var youtubeLink = document.getElementById('myLink').href;
var youtubeVideoKey = youtubeLink.substr(youtubeLink.lastIndexOf("v=") + 2, 11);
// youtubeVideoKey will return "cyRqR56aCKc"

I hope this article will be helpful to everyone’s JavaScript programming design.