functionlLoopRun(sFuncLoop,sFuncEnd,nDelay){
//writenbyhttp://fengyan.iecn.cn
//sFuncLoop>>字符串型，需要重复执行的Javascript函数或语句（多个函数或语句请用;分隔）
//sFuncEnd>>字符串型，用于中止重复执行动作（sFuncLoop）的Javascript函数或语句
//nDelay>>数字型，重复执行的时间间隔（毫秒数）
varvintervalId=null;
varrunString=sFuncLoop;
varstopString=sFuncEnd;
vardelayTime=nDelay;
//varnCount=0;//执行次数//为便于测试，应用时就将此行注释掉
this._doLoop=function(){
if(vintervalId&&!eval(stopString)){
eval(runString);
//nCount++;//记录执行次数//为便于测试，应用时就将此行注释掉
}else{
window.clearInterval(vintervalId);
vintervalId=null;
}
//document.getElementById("TestCount").innerHTML=nCount;//输出执行次数//为便于测试，应用时就将此行注释掉
}
window.clearInterval(vintervalId);
vintervalId=window.setInterval(this._doLoop,delayTime);
}
几个实例代码：
水平往复运动:
<html>
<head>
<title>lLoopRun.js应用实例：水平往复运动</title>
<metahttp-equiv="Content-Type"content="text/html;charset=gb2312"/>
<metaname="Author"content="CnLei,枫岩"/>
<styletype="text/css">
#IECN{position:absolute;}
</style>
<scripttype="text/javascript"src="lLoopRun.js"></script>
</head>
<body>
<p>执行次数：<strongid="TestCount">0</strong></p>
<imgid="IECN"src="http://bbs.iecn.net/attach-iecn/upload/7574.gif"style="left:0px;top:0px;"width="120"/>
<scripttype="text/javascript">
<!--
functionchgPos(sId,n){
varo=document.getElementById(sId);
o.style.left=(parseInt(o.style.left)+n)+"px";
}
functionchgPosStop(sId,nMax){
varo=document.getElementById(sId);
if(parseInt(o.style.left)<0){isReBack=false;}
if(parseInt(o.style.left)>nMax){isReBack=true;}
if(isReBack){
nNum=-Math.abs(nNum);
}else{
nNum=Math.abs(nNum);
}
}
varnNum=10;
varisReBack=false;
lLoopRun("chgPos(’IECN’,nNum);","chgPosStop(’IECN’,600)",20);
-->
</script>
</body>
</html>
自动伸缩大小:
<html>
<head>
<title>lLoopRun.js应用实例：自动伸缩大小</title>
<metahttp-equiv="Content-Type"content="text/html;charset=gb2312"/>
<metaname="Author"content="CnLei,枫岩"/>
<scripttype="text/javascript"src="lLoopRun.js"></script>
</head>
<body>
<p>执行次数：<strongid="TestCount">0</strong></p>
<imgid="IECN"src="http://bbs.iecn.net/attach-iecn/upload/7574.gif"style="left:0px;top:0px;"width="120"/>
<scripttype="text/javascript">
<!--
functionchgPos(sId,n){
varo=document.getElementById(sId);
o.width=(parseInt(o.width)+n);
}
functionchgPosStop(sId,nMax){
varo=document.getElementById(sId);
if(parseInt(o.width)<10){isReBack=false;}
if(parseInt(o.width)>nMax){isReBack=true;}
if(isReBack){
nNum=-Math.abs(nNum);
}else{
nNum=Math.abs(nNum);
}
//returnparseInt(o.style.left)>nMax||(parseInt(o.style.top)>nMax-200);
}
varnNum=10;
varisReBack=false;
lLoopRun("chgPos(’IECN’,nNum);","chgPosStop(’IECN’,500)",20);
-->
</script>
</body>
</html>
垂直往复运动:
<html>
<head>
<title>lLoopRun.js应用实例：垂直往复运动</title>
<metahttp-equiv="Content-Type"content="text/html;charset=gb2312"/>
<metaname="Author"content="CnLei,枫岩"/>
<styletype="text/css">
#IECN{position:absolute;}
</style>
<scripttype="text/javascript"src="lLoopRun.js"></script>
</head>
<body>
<p>执行次数：<strongid="TestCount">0</strong></p>
<imgid="IECN"src="http://bbs.iecn.net/attach-iecn/upload/7574.gif"style="left:0px;top:0px;"width="120"/>
<scripttype="text/javascript">
<!--
functionchgPos(sId,n){
varo=document.getElementById(sId);
o.style.top=(parseInt(o.style.top)+n)+"px";
}
functionchgPosStop(sId,nMax){
varo=document.getElementById(sId);
if(parseInt(o.style.top)<0){isReBack=false;}
if(parseInt(o.style.top)>nMax){isReBack=true;}
if(isReBack){
nNum=-Math.abs(nNum);
}else{
nNum=Math.abs(nNum);
}
//returnparseInt(o.style.top)>nMax||(parseInt(o.style.top)>nMax-200);
}
varnNum=10;
varisReBack=false;
lLoopRun("chgPos(’IECN’,nNum);","chgPosStop(’IECN’,300)",20);
-->
</script>
</body>
</html>
渐变显示(图片):
<html>
<head>
<title>lLoopRun.js应用实例:渐变显示效果</title>
<metahttp-equiv="Content-Type"content="text/html;charset=gb2312"/>
<metaname="Author"content="CnLei,枫岩"/>
<styletype="text/css">
body{background:#080;color:#fff;}
#IECN{
background:#fff;
filter:Alpha(opacity=10);
-moz-opacity:.10;
opacity:.10;
}
</style>
<scripttype="text/javascript"src="lLoopRun.js"></script>
</head>
<body>
<p>执行次数：<strongid="TestCount">0</strong></p>
<imgid="IECN"src="http://bbs.iecn.net/attach-iecn/upload/7574.gif"style="left:0px;top:0px;"width="120"/><br/><br/>刷新再次查看演示效果
<scripttype="text/javascript">
<!--
functionchgOpacity(sId,n){
varo=document.getElementById(sId);
if(o.filters){
o.filters[0].Opacity=parseInt(o.filters[0].Opacity)+n;
}else{
o.style.opacity=eval(document.defaultView.getComputedStyle(o,null).getPropertyValue(’opacity’))+(n*100/10000);
}
}
functionchgOpacityStop(sId){
varo=document.getElementById(sId);
if(o.filters){
returnparseInt(o.filters[0].Opacity)>=99;
}else{
returneval(o.style.opacity)>=0.99;
}
}
lLoopRun("chgOpacity(’IECN’,1);","chgOpacityStop(’IECN’)",20);
-->
</script>
</body>
</html>
原文：http://fengyan.iecn.cn/blog-html-do-showone-uid-35653-type-blog-itemid-2320.html