標籤：rspec blog images highlight on() back tabs pen pac
思路：給一個div設定一個背景圖片1.jpg，然後在這個div上面用兩個for迴圈動態建立一個列數為C行數為R數量的span，並給這些span設定寬高、定位並設定背景圖片0.jpg，然後設定每個span的background-position，使這組span平鋪在div上。當點擊div時換圖，換圖的實現方法是迴圈每個span，以div的寬度的中線為定位線，讓這組span隨機進行transform，然後在結束的時候讓span的透明度變為透明，並且瞬間拉回全部span到原始位置並更換span和div的背景圖片為下一組的圖片（注意div的背景圖片永遠是span的背景圖片的下一張）；可以將此效果自動進行圖片的更換，變成選項卡
轉載請註明‘轉載於Jason齊齊的部落格http://www.cnblogs.com/jasonwang2y60/’
<!DOCTYPE html><html lang="en"><head> <meta charset="UTF-8"> <title>爆炸效果換圖</title> <link rel="stylesheet" href="stylesheets/base.css"> <style> body{ background:#000; } body,html{ width: 100%; height: 100%; overflow:hidden; } #box{ width:900px; height:500px; background:url(images/img_tabs/1.jpg) no-repeat; background-size:cover; margin:100px auto; position:relative; } #box span{ width: 100%; height: 100%; position:absolute; top: 0; left: 0; background:url(images/img_tabs/0.jpg); transform:rotateY(0deg); } </style> <script> function rnd(m,n){ return parseInt(Math.random()*(n-m)+m); } window.onload=function(){ var oBox=document.getElementById(‘box‘); var C=7; var R=8; for(var i=0;i<R;i++){ for(var j=0;j<C;j++){ var oSpan=document.createElement(‘span‘); oSpan.style.width=oBox.offsetWidth/R+‘px‘; oSpan.style.height=oBox.offsetHeight/C+‘px‘; oSpan.style.left=i*oBox.offsetWidth/R+‘px‘; oSpan.style.top=j*oBox.offsetHeight/C+‘px‘; oBox.appendChild(oSpan); oSpan.style.backgroundPosition=-oSpan.offsetLeft+‘px -‘+oSpan.offsetTop+‘px‘; } } var bReady=false; var iNow=0; oBox.onclick=function(){ if(bReady){return;} bReady=true; iNow++; var aSpan=oBox.children; for(var i=0;i<aSpan.length;i++){ aSpan[i].style.transition=‘.4s all ease‘; var x=aSpan[i].offsetWidth/2+aSpan[i].offsetLeft-oBox.offsetWidth/2; var y=aSpan[i].offsetHeight/2+aSpan[i].offsetTop-oBox.offsetHeight/2; aSpan[i].style.transform=‘perspective(800px) translateX(‘+x+‘px) translateY(‘+y+‘px) rotateX(‘+rnd(-180,180)+‘deg) rotate(‘+rnd(-180,180)+‘deg) scale(1.4)‘; aSpan[i].style.opacity=‘0‘; } aSpan[0].addEventListener(‘transitionend‘,function(){ bReady=false; for(var i=0;i<aSpan.length;i++){ aSpan[i].style.transition=‘none‘; aSpan[i].style.transform=‘perspective(800px) translateX(0) translateY(0) rotateX(0) rotateY(0) scale(1)‘; aSpan[i].style.opacity=1; aSpan[i].style.backgroundImage=‘url(images/img_tabs/‘+iNow%3+‘.jpg)‘; oBox.style.backgroundImage=‘url(images/img_tabs/‘+(iNow+1)%3+‘.jpg)‘; } },false); }; }; </script></head><body> <div id="box"> </div></body></html>
css3爆炸效果更換圖片輪播圖
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