JavaScript generate random numbers without repeating

Question

I have some code where I have an array of x amount of items. In this case, videos, and I want to randomly call a video, however if the current video already called is the sa

Answer 1

First of all, why do you wrap all those strings in Arrays? I dropped them in my solution below. Anyway, easiest and cleanest solution is to clone the Array, and drop the selected URL from the new Array.

var videoLinks = [
    '',
    '',
    '',
    '',
    ''
];
var temp = videoLinks.slice();

function randomVideo(){
  var r = Math.floor(Math.random()*temp.length);
  return temp.splice(r, 1);
}