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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>任意值运动框架</title>
<style>
div{width:200px;height:200px;background:red;float:left;border:10px black solid;margin:50px;font-size:50px;color:yellow;}
#div4{filter:alpha(opacity:30);opacity:0.3;}
</style>
<script>
window.onload=function (){
var oDiv1=document.getElementById('div1');
var oDiv2=document.getElementById('div2');
var oDiv3=document.getElementById('div3');
var oDiv4=document.getElementById('div4');
oDiv1.onmouseover=function (){
StartMove(this,'width',500);
};
oDiv1.onmouseout=function (){
StartMove(this,'width',200);
};
oDiv2.onmouseover=function (){
StartMove(this,'height',500);
};
oDiv2.onmouseout=function (){
StartMove(this,'height',100);
};
oDiv3.onmouseover=function (){
StartMove(this,'font-size',100);
};
oDiv3.onmouseout=function (){
StartMove(this,'font-size',50);
};
oDiv4.onmouseover=function (){
StartMove(this,'opacity',100);
};
oDiv4.onmouseout=function (){
StartMove(this,'opacity',30);
};
};
function getstyle(obj,name)
{
if(obj.currentStyle) //针对ie获取
{
return obj.currentStyle[name];
}
else //针对非行间样式
{
return getComputedStyle(obj,null)[name];
}
};
function StartMove(obj,ss,itarget)
{
clearInterval(obj.timer);
obj.timer=setInterval(function (){
var cur=0;
if(ss=='opacity'){
cur=parseFloat(getstyle(obj,ss))*100
}
else
{
cur=parseInt(getstyle(obj,ss));
}
var speed=(itarget-cur)/4;
speed=speed>0?Math.ceil(speed):Math.floor(speed);
if(itarget-cur==0){
clearInterval(obj.timer);
}
else{
if(ss=='opacity')
{
obj.style.filter='alpha(opacity='+(cur+speed)+')';
//通过if-else里的取整解决ie里透明度获取值存在偏差问题
if((cur+speed)>=30)
{
obj.style.opacity=Math.ceil((cur+speed))/100;
}
else
{
obj.style.opacity=Math.floor((cur+speed))/100;
}
document.getElementById('txt1').value=cur+speed;
}
else
{
obj.style[ss]=cur+speed+'px';
}
}
},30);
};
</script>
</head>
<body>
<div id="div1">
变宽</div>
<div id="div2">
变高</div>
<div id="div3">
字符变大</div>
<div id="div4">
<input id="txt1" type="text" ? />
</div>
</body>
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