jQuery立体感动态导航特效代码

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以下是 jQuery立体感动态导航特效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>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>jQuery立体感动态导航</title>
<link href="style.css" rel="stylesheet" type="text/css" media="screen" />
<script src="js/jquery.min.js" type="text/javascript"></script> 
<script src="js/animate-bg.js" type="text/javascript"></script>
<script src="js/scripts.js" type="text/javascript"></script>
</head>

<body>

<div id="container">
	<ul id="nav">
		<li><a href="#">Home</a></li>
		<li><a href="#">About</a></li>
		<li><a href="#">Work</a></li>
		<li><a href="#">Contact</a></li>
	</ul>
</div>
</body>
</html>

JS代码(animate-bg.js):

/** * @author Alexander Farkas * v. 1.21 */
(function($){
	if(!document.defaultView || !document.defaultView.getComputedStyle){
	// IE6-IE8var oldCurCSS = jQuery.curCSS;
	jQuery.curCSS = function(elem,name,force){
	if(name === 'background-position'){
	name = 'backgroundPosition';
}
if(name !== 'backgroundPosition' || !elem.currentStyle || elem.currentStyle[ name ]){
	return oldCurCSS.apply(this,arguments);
}
var style = elem.style;
	if ( !force && style && style[ name ] ){
	return style[ name ];
}
return oldCurCSS(elem,'backgroundPositionX',force) +' '+ oldCurCSS(elem,'backgroundPositionY',force);
}
;
}
var oldAnim = $.fn.animate;
	$.fn.animate = function(prop){
	if('background-position' in prop){
	prop.backgroundPosition = prop['background-position'];
	delete prop['background-position'];
}
if('backgroundPosition' in prop){
	prop.backgroundPosition = '('+ prop.backgroundPosition;
}
return oldAnim.apply(this,arguments);
}
;
	function toArray(strg){
	strg = strg.replace(/left|top/g,'0px');
	strg = strg.replace(/right|bottom/g,'100%');
	strg = strg.replace(/([0-9\.]+)(\s|\)|$)/g,"$1px$2");
	var res = strg.match(/(-?[0-9\.]+)(px|\%|em|pt)\s(-?[0-9\.]+)(px|\%|em|pt)/);
	return [parseFloat(res[1],10),res[2],parseFloat(res[3],10),res[4]];
}
$.fx.step. backgroundPosition = function(fx){
	if (!fx.bgPosReady){
	var start = $.curCSS(fx.elem,'backgroundPosition');
	if(!start){
	//FF2 no inline-style fallbackstart = '0px 0px';
}
start = toArray(start);
	fx.start = [start[0],start[2]];
	var end = toArray(fx.options.curAnim.backgroundPosition);
	fx.end = [end[0],end[2]];
	fx.unit = [end[1],end[3]];
	fx.bgPosReady = true;
}
//return;
	var nowPosX = [];
	nowPosX[0] = ((fx.end[0] - fx.start[0]) * fx.pos) + fx.start[0] + fx.unit[0];
	nowPosX[1] = ((fx.end[1] - fx.start[1]) * fx.pos) + fx.start[1] + fx.unit[1];
	fx.elem.style.backgroundPosition = nowPosX[0]+' '+nowPosX[1];
}
;
}
)(jQuery);

JS代码(scripts.js):

$(document).ready(function(){
	$("ul#nav li a").addClass("js");
	$("ul#nav li a").hover( function (){
	$(this).stop(true,true).animate({
	backgroundPosition:"(0 0)"}
,200);
	$(this).animate({
	backgroundPosition:"(0 -5px)"}
,150);
}
,function (){
	$(this).animate({
	backgroundPosition:"(0 -149px)"}
,200);
}
);
}
);

CSS代码(style.css):

body,div,h1,h2,h3,h4,h5,h6,p,ul,ol,li,dl,dt,dd,img,form,fieldset,input,textarea,blockquote{margin:0;padding:0;border:0;}
body{background:#f5f0e0 url(images/noise.png);}
#container{height:600px;background:url(images/bg.jpg) center top no-repeat;}
ul#nav{width:700px;margin:0 auto;text-align:center;overflow:hidden;}
ul#nav li{float:left;list-style:none;}
ul#nav li a{display:block;width:97px;height:77px;padding:72px 0 0 0;margin:0 32px 0 32px;font:bold 16px Helvetica,Arial,Sans-Serif;text-transform:uppercase;color:#9c5959;text-shadow:0 1px 3px #c4bda6;text-decoration:none;background:url(images/label.png) 0 -149px no-repeat;}
ul#nav li a:hover{background:url(images/label.png) 0 0 no-repeat;color:#eee9d9;text-shadow:0 2px 3px #4c2222;}
ul#nav li a.js:hover{background:url(images/label.png) 0 -149px no-repeat;}

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