javascript - JS remove everything after the last occurrence of a character

Question

Okay I have this

var URL = "http://stackoverflow.com/questions/10767815/remove-everything-before-the-last-occurrence-of-a-character";
console.log(URL.substring(URL.lastIndexOf("/")));

Gives you "/remove-everything-before-the-last-occurrence-of-a-character"

How do I get "http://stackoverflow.com/questions/10767815/"

Answer 1

Here you are:

var URL = "http://stackoverflow.com/questions/10767815/remove-everything-before-the-last-occurrence-of-a-character";
alert(URL.substring(0, URL.lastIndexOf("/") + 1));