仅支持任务点全为视频的自动播放，静音播放，自动连播,自动下一个任务点
// ==UserScript==
// @name 学习通自动播放视频
// @namespace adog
// @version 1.0
// @description 仅支持任务点全为视频的自动播放，静音播放，自动连播,自动下一个任务点
// @author a6op
// @match https://mooc1.chaoxing.com/mycourse/studentstudy?*
// @grant none
// ==/UserScript==
(function() {
'use strict';
// Your code here...
findtask();
var timefind=setInterval(function(){
if(document.getElementById("iframe").contentWindow.document.getElementsByTagName("iframe")[document.getElementById("iframe").contentWindow.document.getElementsByTagName("iframe").length-1].contentWindow.document.getElementsByClassName("vjs-progress-holder vjs-slider vjs-slider-horizontal")[0].getAttribute("aria-valuenow") == 100){
findtask();
};
},10000);
function findtask(){
setTimeout(function(){
document.getElementsByClassName("catalog_points_yi prevTips")[0].parentNode.children[0].click();
},1000);
playvideo();
setTimeout(function(){
if(document.getElementsByClassName("catalog_points_yi prevTips").length==0){clearInterval(timefind);}
},1000);
};
function playvideo(){
var videolist=0;
var timeplay=setInterval(function(){
if(videolist>=document.getElementById("iframe").contentWindow.document.getElementsByTagName("iframe").length){clearInterval(timeplay);};
if(document.getElementById("iframe").contentWindow.document.getElementsByClassName("ans-attach-ct")[videolist].className !="ans-attach-ct ans-job-finished"){
setTimeout(function(){
document.getElementById("iframe").contentWindow.document.getElementsByTagName("iframe")[videolist].contentWindow.document.getElementById("video").children[0].muted=true;
},3000);
setTimeout(function(){
document.getElementById("iframe").contentWindow.document.getElementsByTagName("iframe")[videolist].contentWindow.document.getElementById("video").children[0].play();
},3000);
}
else
{videolist++;}
},3000);
};
})();