jquery鼠标经过图片抖动效果js代码

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以下是 jquery鼠标经过图片抖动效果js代码的示例演示效果:

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部分效果截图:

HTML代码(index.html):

<!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>jquery鼠标经过图片抖动效果</title>
<script type="text/javascript" src="js/jquery-1.3.2.min.js"></script>
<script type="text/javascript" src="js/zzsc.js"></script>
<script type="text/javascript">
	$(function(){
		 $("#ul img").each(function(k,img){
			new JumpObj(img,15);//晃动幅度
			$(img).hover(function(){this.parentNode.parentNode.className="hover"});
		});
 	}); 

</script>
<style>
	*{margin:0;padding:0;list-style:none;border:0;}
	ul{width:1000px;margin:30px auto;}
	li{float:left;padding-left:20px;}
</style>
</head>

<body>
	<ul id="ul">
    	<li><img src="images/1.png" alt=""/></li>
    	<li><img src="images/1.png" alt=""/></li>
    	<li><img src="images/1.png" alt=""/></li>
    	<li><img src="images/1.png" alt=""/></li>
    </ul>
</body>
</html>

JS代码(zzsc.js):

function JumpObj(elem,range,startFunc,endFunc){
	var curMax = range = range || 6;
	startFunc = startFunc || function(){
}
;
	endFunc = endFunc || function(){
}
;
	var drct = 0;
	var step = 1;
	init();
	function init(){
	elem.style.position = 'relative';
	active()}
function active(){
	elem.onmouseover = function(e){
	if(!drct)jump()}
}
function deactive(){
	elem.onmouseover = null}
function jump(){
	var t = parseInt(elem.style.top);
	if (!drct) motionStart();
	else{
	var nextTop = t - step * drct;
	if (nextTop >= -curMax && nextTop <= 0) elem.style.top = nextTop + 'px';
	else if(nextTop < -curMax) drct = -1;
	else{
	var nextMax = curMax / 2;
	if (nextMax < 1){
	motionOver();
	return;
}
curMax = nextMax;
	drct = 1;
}
}
setTimeout(function(){
	jump()}
,10 / (curMax+3) + drct * 3);
}
function motionStart(){
	startFunc.apply(this);
	elem.style.top='0';
	drct = 1;
}
function motionOver(){
	endFunc.apply(this);
	curMax = range;
	drct = 0;
	elem.style.top = '0';
}
this.jump = jump;
	this.active = active;
	this.deactive = deactive;
}

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