把听力的进度条显示出来，通过操纵把dom替换为原生的audio
// ==UserScript==
// @name get超星听力进度条
// @namespace http://tampermonkey.net/
// @version 0.2
// @description 把听力的进度条显示出来，通过操纵把dom替换为原生的audio
// @author hanhan9449
// @match *://*.chaoxing.com/work*
// @grant none
// ==/UserScript==
'use strict'
function main () {
var audioIFrames = document.getElementsByClassName('ans-insertaudio-module')
for (var iframe of audioIFrames) {
iframe.style.width = '100%'
var iframeDoucment = iframe.contentDocument
var audio = iframeDoucment.getElementsByTagName('audio')[0]
var style = audio.style
style.width = '100%'
style.height = '30px'
style.visibility = ''
var body = iframeDoucment.getElementsByTagName('body')[0]
var reader = body.getElementsByTagName('div')[0]
body.replaceChild(audio, reader)
}
}
window.onload = function() {
setTimeout(main, 500)
}