<!DOCTYPE html>
<html lang="zh">
<head>
<meta charset="UTF-8">
<title>背景</title>
</head>
<body>
<input type="button" id="btn2" value="开始" />
<input type="button" id="btn2" value="暂停" />
<div id="pic" style="width: 200px; height: 200px; border:10px double ;"></div>
<script type="text/javascript">
var obtn1=document.getElementById("btn1")
var obtn2=document.getElementById("btn2")
var opic=document.getElementById("pic")
var n=0
var timer=null
var arr=["兔子.jpg","狗狗.jpg"]
obtn1.onclick=function () {
clearInterval(timer)
timer=setInterval(aa,1000)
}
function aa () {
opic.img.src=arr[n]
n++
n=n%arr.length
}
obtn2.onclick=function () {
clearInterval(timer)
</script>
</body>
</html>
是不是数组哪里错了？
