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function getId(url) {
const regExp = /^.*(youtu.be\/|v\/|u\/\w\/|embed\/|watch\?v=|&v=)([^#&?]*).*/;
const match = url.match(regExp);
return (match && match[2].length === 11)
? match[2]
: null;
}
const videoId = getId('http://www.youtube.com/watch?v=zbYf5_S7oJo');
const iframeMarkup = '<iframe width="560" height="315" src="//www.youtube.com/embed/'
+ videoId + '" frameborder="0" allowfullscreen></iframe>';
console.log('Video ID:', videoId)