焦點圖相信對大家來說都不陌生，本文給大家分享的是一種圖片高斯模糊切換效果的焦點圖，下面話不多說了，來看看實現的效果圖和實例代碼吧。
效果圖
實例代碼
<!doctype html><html><head><meta charset="utf-8"><title>無標題文檔</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());把最后一個刪除添加到數組第一個 //arr.push(arr.shift());把第一個刪除添加到數組第一個 //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>更多關于JavaScript相關內容感興趣的讀者可查看本站專題：《JavaScript切換特效與技巧總結》、《JavaScript查找算法技巧總結》、《JavaScript動畫特效與技巧匯總》、《JavaScript錯誤與調試技巧總結》、《JavaScript數據結構與算法技巧總結》、《JavaScript遍歷算法與技巧總結》及《JavaScript數學運算用法總結》
總結
以上就是這篇文章的全部內容了，希望本文的內容對大家的學習或者工作能帶來一定的幫助，如果有疑問大家可以留言交流。
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