Cacher is the code snippet organizer for pro developers

var urlArray = ['http://url1.com', 'http://url2.com', 'http://url3.com'];
var random_url;
var redirect_after_milliseconds = 2000;

$(function() {
  random_url = urlArray[Math.floor(Math.random() * urlArray.length)];
  
  setTimeout(function() {
    // similar behavior as an HTTP redirect
    window.location.replace(random_url)
  }, redirect_after_milliseconds);
  
});