关于setInterval和浏览器选项卡切换的有关问题
日期：2014-05-16 浏览次数：20473 次
关于setInterval和浏览器选项卡切换的问题
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<!DOCTYPE html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>Question</title>
<style>
.outer {border:1px solid #000; width:520px; height:300px; position:relative; padding:0; overflow:hidden;}
.inner {position:absolute;}
.inner div{border:1px solid red; width:118px; height:138px; margin:5px 5px; float:left;}
</style>
</head>
<body>
<div class="outer">
<div class="inner" id="inner">
<div>1</div><div>1</div><div>1</div><div>1</div>
<div>2</div><div>2</div><div>2</div><div>2</div>
<div>3</div><div>3</div><div>3</div><div>3</div>
<div>4</div><div>4</div><div>4</div><div>4</div>
<div>5</div><div>5</div><div>5</div><div>5</div>
<div>6</div><div>6</div><div>6</div><div>6</div>
<div>7</div><div>7</div><div>7</div><div>7</div>
<div>8</div><div>8</div><div>8</div><div>8</div>
<div>9</div><div>9</div><div>9</div>
</div>
</div>
</body>
<script>
function startScoll(){
var outer = document.getElementById("inner"),timer,mover,tempSub,
divs = outer.getElementsByTagName("div");
outerH = Math.ceil(divs.length/4)*150;
if(divs.length % 4 !== 0){
var temp = 4 - divs.length % 4;
for (var i = 0; i < temp; i++) {
outer.appendChild(document.createElement("div"));
}
}
for(var i = 0; i < 8; i++){
outer.appendChild(divs[i].cloneNode(true));
}
outer.style.top = "0px";
clearInterval(timer);
timer = setInterval(function(){
tempSub = 0;
clearInterval(mover);
mover = setInterval(function(){
outer.style.top = delPx(outer.style.top) - 10 + "px";
tempSub++;
if(tempSub == 15){
clearInterval(mover);
if(delPx(outer.style.top) == -outerH){
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