前言：
眼前小伙伴们对“js能做什么效果”大体比较关切，姐妹们都需要学习一些“js能做什么效果”的相关内容。那么小编在网摘上网罗了一些有关“js能做什么效果””的相关知识，希望姐妹们能喜欢，朋友们一起来学习一下吧！<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>多物体复杂动画</title>
<style type="text/css">
body,div,dl,dt,dd,ul,ol,li,h1,h2,h3,h4,h5,h6,pre,form,fieldset,input,textarea,p,blockquote,th,tr,td {margin:0;padding:0; font-size:12px;}
table {border-collapse:collapse;border-spacing:0;}
fieldset,img {border:0}
address,caption,cite,code,dfn,em,strong,th,var {font-style:normal;font-weight:normal}
ol,ul {list-style:none}
caption,th,td{text-align:center}
h1,h2,h3,h4,h5,h6 {font-size:100%;font-weight:normal}
q:before,q:after {content:''}
abbr,acronym { border:0}
.odiv{position:relative;}
.odiv ul li{width:200px; height:100px; background:yellow; margin-bottom:20px; border:2px solid #000;}
</style>
</head>
<body>
<div id="odiv" class="odiv">
<ul>
<li id="li1"></li>
<li id="li2"></li>
</ul>
</div>
</body>
</html>
<script language="javascript">
window.onload = function(){
var li1 = document.getElementById('li1');
var li2 = document.getElementById('li2');
li1.onmouseover = function(){
startMov(this,400,'width');
};
li1.onmouseout = function(){
startMov(this,200,'width');
};
li2.onmouseover = function(){
startMov(this,200,'height');
};
li2.onmouseout = function(){
startMov(this,100,'height');
};
function startMov(obj,itarget,attr){
clearInterval(obj.timer);//执行动画之前清除动画
obj.timer = setInterval(function(){
var icur = parseInt(getStyle(obj,attr));
var speed =0;
speed = (itarget - icur)/8;
speed = speed>0?Math.ceil(speed):Math.floor(speed);
if(icur == itarget){
clearInterval(obj.timer);
}
else{
obj.style[attr] = icur+speed+'px';
}
},30);
}
function getStyle(obj,attr)
{
if(obj.currentStyle){
return obj.currentStyle[attr];
}
else{
return getComputedStyle(obj,false)[attr];
}
}
}
//offsetWidth获取的是元素实际的宽度（包括边框和内边距）
//只要是多物体运动，所有的属性都不能共用
</script>
标签： #js能做什么效果
