點小圖彈出放大圖片的JavaScript效果_圖片特效特效

類似于點擊小圖預覽圖片的功能，在淘寶網可以見到這種圖片展示技巧，當用鼠標點擊小圖的時候，大圖會從小圖的位置突然彈出來，而且慢慢放大，至于這么大到什么程序，這個需要由您來設定，實際上本特效還是非常有用的。

<!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>
<title>彈出放大圖片的JavaScript效果</title>
<meta http-equiv="mrc-type" mrc="text/html;charset=gb2312">
<style type="text/css">
*{margin:0;padding:0;}
img{border:0;border:1px #ccc solid;}
body{font-size:12px;background:#fff;}
a{color:#333;text-decoration:none;}
a:hover{text-decoration:none;}
.main{position:relative;width:640px;margin:20px auto;}
.left{float:left;width:220px;}
.left li{float:left;margin-right:8px;list-style:none;}
.right{float:right;width:400px;}
.right a{float:left;margin-right:10px;padding:5px 10px;}
.right a:hover{background:#ff9000;color:#fff;}
.left a:hover{position:relative;top:1px;left:1px;}
#imglink{float:none;margin:0;padding:0;}
#links,#more{margin-top:400px;}
.fxImg{position:absolute;left:0;top:0;background:#fff;display:none;cursor:pointer;padding:5px;}
</style>
<script type="text/javascript">
ldh={
	$:function(o){return typeof o=="string"?document.getElementById(o):o},
	$$:function (o,p){return (p==undefined?document:this.$(p)).getElementsByTagName(o)},
	on:function(o,type,fn){o.attachEvent?o.attachEvent('on'+type,function(){fn.call(o)}):o.addEventListener(type,fn,false);return this},
css:function(who,key){
if(who.style[key]!='')return who.style[key];
if(!!window.ActiveXObject)return who.currentStyle[key];
return document.defaultView.getComputedStyle(who,"")
.getPropertyValue(key.replace(/([A-Z])/g,"-$1").toLowerCase()); 
	},
	pos:function(who){
		var p=ldh.$(who),x=0,y=0;
		while(p&&!(/html|body/i.test(p.tagName))){x+=p.offsetLeft;y+=p.offsetTop;p=p.offsetParent;};
		return {'x':x,'y':y};
	},
	move:function(who,attr,val,s,fn){
		who=this.$(who);
		var isbg=/backgroundPosition/i.test(attr)
			,fm=parseInt(this.css(who,attr))||0
			,by=isbg?((who.getAttribute('bg_y')||0)+'px'):'';
		if(this.css(who,attr)==undefined&&isbg)fm=200;
		var iFx=this.fx(fm,val,s);
		clearInterval(who['timer_'+attr]);
		who['timer_'+attr]=setInterval(function (){
			var v=iFx();
			who.style[attr]=v+'px '+by;			
			if(v==val){	fn&&fn();clearInterval(who['timer_'+attr]);};
		},18);return this;
	},
	fx:function(form,to,s){
		var m=Math[form<to?'ceil':'floor'];
		return function (){return form+=m((to-form)*(s||0.4))};
	}
};
ldh.on(window,'load',function (){
	var fxImg=document.createElement('IMG');
	fxImg.className='fxImg';
	document.body.appendChild(fxImg);
	var pos=ldh.pos('preview');
	var links=ldh.$$('A',ldh.$('menuPic'));
	for (var i=0;i<links.length;++i ) {
		var $=links[i],$p=ldh.$$('IMG',$)[0],mypos=ldh.pos($p),url=$.href
		,attr={href:'javascript:void(0);',imgsrc:$p.src,x:mypos.x,y:mypos.y,'url':url};
		for (var Id in attr){$[Id]=attr[Id]}
		ldh.on($,'click',function (){
			fxImg.src=this.imgsrc;
			var $$=fxImg.style,This=this;
			$$.left=this.x+'px';
			$$.top=this.y+'px';
			$$.display='block';	
			$$.height='140px';
			fxImg.onclick=function (){location=This.url};
			ldh.move(fxImg,'left',pos.x).move(fxImg,'top',pos.y,0.4,function(){ldh.move(fxImg,'height',400)});
		});
	}
})
</script>
</head>
<body>
<div   id="uvm7kvj"   class="main">
	<div   id="rpkadu7"   class="left" id="menuPic">
    	<ul>
        	<li><a href="http://www.hao123.com" ><img src="http://p1.mb5u.com/texiao/1/20110225160457234.jpg" /></a></li>
            <li><a href="http://www.baidu.com"><img src="http://p1.mb5u.com/texiao/1/20110225160457235.jpg" /></a></li>
            <li><a href="http://www.163.com"><img src="http://p1.mb5u.com/texiao/1/20110225160457236.jpg" /></a></li>
        </ul>
    </div>
    </div>
</body>
</html>

所屬頻道：圖片特效特效/更新時間：2012-12-03

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