Code-Case

document.addEventListener('DOMContentLoaded', init, false)
var videoId = document.getElementById('video')
//var videoTitle = videoId.getAttribute('data-description')
var videoTitle = '宝宝身边有怪物'

function init () {
	videoId.addEventListener('ended', videoEnd, false)
	videoId.addEventListener('timeupdate', videoTimeUpdate, false)
	videoId.addEventListener('play', videoPlay, false)