JavaScript indexOf() - how to get specific index

Question

Let\'s say I have a URL:

http://something.com/somethingheretoo

and I want to get what\'s after the 3rd instance of /?

Answer 1

If you want to stick to indexOf:

var string = "http://something/sth1/sth2/sth3/"
var lastIndex = string.indexOf("/", lastIndex);
lastIndex = string.indexOf("/", lastIndex);
lastIndex = string.indexOf("/", lastIndex);
string = string.substr(lastIndex);

If you want to get the path of that given URL, you can also use a RE:

string = string.match(/\/\/[^\/]+\/(.+)?/)[1];

This RE searches for "//", accepts anything between "//" and the next "/", and returns an object. This object has several properties. propery [1] contains the substring after the third /.