Question

the Javascript below only works as for youtube videos actual url.

<script>
regex = /http\:\/\/www\.youtube\.com\/watch\?v=(\w{11})/;
url = 'http://www.youtube.com/watch?v=VK4ah66jBvE&feature=feedu';
id = url.match(regex)[1];
document.write(''+id+'');
</script>

what i dont know how to do is a regex if the url happened to be a thumbnail of a youtube video which in this example would be http://i1.ytimg.com/vi/VK4ah66jBvE/0.jpg ? I have tried

<script>
regex = /http\:\/\/i1\.ytimg\.com\/vi(\w{11})/0.jpg;;
url = 'http://i1.ytimg.com/vi/VK4ah66jBvE/0.jpg';
id = url.match(regex)[1];
document.write(''+id+'');
</script>

Answer 1

would this work?

regex = new RegExp(/\/vi\/(.*)\//);
url = 'http://i1.ytimg.com/vi/VK4ah66jBvE/0.jpg';
id = url.match(regex)[1];