JS實(shí)現(xiàn)圖片高斯模糊切換效果的焦點(diǎn)圖實(shí)例-創(chuàng)新互聯(lián)

焦點(diǎn)圖相信對(duì)大家來(lái)說(shuō)都不陌生,本文給大家分享的是一種圖片高斯模糊切換效果的焦點(diǎn)圖,下面話不多說(shuō)了,來(lái)看看實(shí)現(xiàn)的效果圖和實(shí)例代碼吧。

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效果圖

JS實(shí)現(xiàn)圖片高斯模糊切換效果的焦點(diǎn)圖實(shí)例

實(shí)例代碼

<!doctype html>
<html>
<head>
<meta charset="utf-8">
<title>無(wú)標(biāo)題文檔</title>
<style>
@-webkit-keyframes show
{
	0%{
		opacity:1;
		-webkit-transform:scale(1);
	}
	100%
	{
		opacity:.1;
		-webkit-transform:scale(3);
	}
}
body{ background:#e8d0ca;}
#wrap{width:600px; margin:100px auto;border:2px solid #000; position:relative;}
#list{ position:relative; height:310px;margin:0;padding:0; list-style:none;}
#list li{ width:281px;height:310px; background:url(http://cdn.attach.qdfuns.com/notes/pics/201701/17/113914zaxalfffaylelyxd.png) no-repeat; position:absolute;top:0; transition:.6s;}
#list span{ width:100%;height:100%; display:block;transition:.6s;}
#list li:nth-of-type(1){ left:0;z-index:1; -webkit-transform:scale(0.8);opacity:0.6;}
#list li:nth-of-type(1) span{ background:url(http://cdn.attach.qdfuns.com/notes/pics/201701/17/113914zfkmqfb0zzummnhy.png); opacity:1;}
#list li:nth-of-type(2){ left:calc(50% - 140px);background-image:url(http://cdn.attach.qdfuns.com/notes/pics/201701/17/113913nvvkf5pf4f77x55k.png);z-index:2; opacity:1;}
#list li:nth-of-type(2) span{ background:url(http://cdn.attach.qdfuns.com/notes/pics/201701/17/113914cx8x8z8ldfgckpmf.png); opacity:0;}
#list li:nth-of-type(3){ left:calc(100% - 281px);background-image:url(http://cdn.attach.qdfuns.com/notes/pics/201701/17/113914zhou55z6tlru25lu.png);z-index:1;-webkit-transform:scale(0.8); opacity:0.6;}
#list li:nth-of-type(3) span{ background:url(http://cdn.attach.qdfuns.com/notes/pics/201701/17/113914sofg7wja0c0cowjv.png); opacity:1;}
.btn{width:18px;height:29px; position:absolute;top:130px;z-index:10; cursor:pointer;}
.btn span{ position:absolute;left:0;top:0; background:inherit; width:100%;height:100%; transition:.5s;}
.btn:hover span:nth-of-type(1){-webkit-animation:show 2s infinite; }
.btn:hover span:nth-of-type(2){-webkit-animation:show 2s 1s infinite; }
#prev{ left:80px; background:url(http://cdn.attach.qdfuns.com/notes/pics/201701/17/113915d96e0acuyjccybcb.png) no-repeat;}
#next{ right:80px; background:url(http://cdn.attach.qdfuns.com/notes/pics/201701/17/113915kfhwnrawaeaibf6a.png) no-repeat;}
</style>
</head>
<body>
<div id="wrap">
	<ul id="list">
 	<li>
 	<span></span>
 </li>
 <li>
 	<span></span>
 </li>
 <li>
 	<span></span>
 </li>
 </ul>
 <div id="prev" class="btn">
 	<span></span>
 <span></span>
 </div>
 <div id="next" class="btn">
 	<span></span>
 <span></span>
 </div>
</div>
<script>
window.onload=function()
{
	var oList=document.getElementById("list");
	var aLi=oList.children;
	var oPrev=document.getElementById("prev");
	var oNext=document.getElementById("next");
	var arr=[];
	//arr.unshift(arr.pop());把最后一個(gè)刪除添加到數(shù)組第一個(gè)
	//arr.push(arr.shift());把第一個(gè)刪除添加到數(shù)組第一個(gè)
 //獲取li的信息
	for(var i=0;i<aLi.length;i++)
	{
		var oSpan=aLi[i].children[0];
		arr[i]={left:getStyle(aLi[i],"left"),opacity:getStyle(aLi[i],"opacity"),scale:getStyle(aLi[i],"-webkit-transform"),zIndex:getStyle(aLi[i],"z-index"),alpha:getStyle(oSpan,"opacity")};
	}
	oPrev.onclick=function()
	{
		arr.unshift(arr.pop());
		toStyle();
	};
	oNext.onclick=function()
	{
		arr.push(arr.shift());
		toStyle();
	};
	function toStyle()
	{
		for(var i=0;i<aLi.length;i++)
		{
			var oSpan=aLi[i].children[0];
			aLi[i].style.left=arr[i].left;
			aLi[i].style.opacity=arr[i].opacity;
			aLi[i].style.WebkitTransform=arr[i].scale;	
			aLi[i].style.zIndex=arr[i].zIndex;	
			oSpan.style.opacity=arr[i].alpha;
		}	
	}
};
function getStyle(obj,attr)
{
 if( obj.currentStyle){
  return obj.currentStyle[attr]; 
 }
 return getComputedStyle(obj)[attr]; 
}
</script>
</body>
</html>

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