js在浏览器不报错是为什么？而且就算用下载的课件写也不运行为什么啊？
<!DOCTYPE html>
<html>
<head>
<title>抽奖</title>
<meta charset="utf-8">
<link rel="stylesheet" type="text/css" href="css/style.css">
<script type="text/javascript" scr="js/jss.js"></script>
</head>
<body>
<div id="title" class="title">开始抽奖啦！</div>
<div class="btns">
<span id="play">开 始</span>
<span id="stop">结 束</span>
</div>
</body>
</html>
var data=['iphone6s','honor5x','mate8','p9','v8','100元代金券'],
timer=null,
flag=0;
window.onload=function(){
var play=document.getElementById('play'),
stop=document.getElementById('stop');
//开始抽奖
//鼠标事件
play.onclick=playFun;
stop.onclick=stopFun;
//键盘事件
document.onkeyup=function(event){
event = event || window.event;
if (event.keycode==13) {
if (flag==0) {
playFun;
flag=1
} else {
stopFun;
flag=0;
}
}
}
}
function playFun(){
var title=getElementById('title'),
play=getElementById('play');
clearinterval(timer);
timer=setInterval(
function(){
var random=Math.floor(Math.random()*data.length);
title.innerHTML=data[random];
},50)
play.style.background='#999';
}
function stopFun(){
clearinterval(timer);
var play=getElementById('play');
play.style.background='#036';
}
C佳1回答
随时随地看视频慕课网APP
Html/CSS
JavaScript