try to take over the world!
// ==UserScript==
// @name crazily play
// @namespace http://tampermonkey.net/
// @version 0.2
// @description try to take over the world!
// @author shifan
// @match http://mooc1.chaoxing.com/*
// @grant none
// ==/UserScript==
(function() {
'use strict';
window.setInterval(function () {
var iframe1 = document.getElementsByTagName('iframe')[0]
var iframe2 = iframe1.contentDocument.getElementsByTagName('iframe')[0]
var video = iframe2.contentDocument.getElementsByTagName('video')[0]
video.play()
video.playbackRate = 16
}, 100)
})();