Code for switching effects of pure js + css imitation flash images

Source: Internet
Author: User
Tags ranges
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<!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> </title><base href="http://www.cnblogs.com/images/cnblogs_com/chenjmdg/20100112/"><style>#imageFx{border:1px solid #000;width:704px;height:185px;overflow:hidden;position:relative;}#imageFx img{display:none;}#maskFx{position:absolute;width:100%;height:100%;overflow:hidden;}#maskFx .range{float:left;display:inline;position:relative;}#maskFx .range div{position:absolute; left:0;top:0;}#imageFx .pageBar{position:absolute;z-index:99;right:10px;bottom:10px}.pageBar a{display:block;background:#000;border:1px solid #666;color:#fff;float:left;width:16px;font-size:12px;margin:2px;text-align:center;line-height :16px;font-family:Arial;cursor:pointer;text-decoration:none;}.pageBar a:hover,.pageBar a.current{background:red;color:#fff;border:1px solid #600;border-top:1px solid #F96;border-left:1px solid #F96;}</style></head><body><div id="imageFx"> <div id="maskFx"></div></div></body><script>Tpl={ w:704,h:185, __clip__:function (el,x,y,w,h){ var _=[y,w,h,x]; for(var i=_.length;i--;)_[i]=_[i]<0?'auto':_[i]+'px'; el.style.clip="rect("+_.join(" ")+")"; }, __timeLine__:function (play,end,len) { var play=play||Date,end=end||Date,s=0,t=0,len=(len||480)/10,th,p=Math.pow, fx=function(x){return x},c=function(f,t){return +f+(t-f)*s}; return th=setInterval(function(){play(c,s=fx(t++/len));if(s==1)end(clearInterval(th))},10); }, __createMask__:function (){ var ranges=[],masks=[],r,c; for(var i=0;i<32;i++){ r=document.createElement('DIV'); r.className="range"; masks.push(r.appendChild(document.createElement('DIV'))); ranges.push(this.MaskDIV.appendChild(r)) }; this.masks=masks; this.ranges=ranges }, __setMask__:function (bgImg,col,row){ var a,b,w=Math.ceil(this.w/col),h=Math.ceil(this.h/row),l=this.ranges.length; this.uw=w; this.uh=h; this.actCount=Math.min(col*row,l); for(var i=0;i<l;i++){ a=this.ranges[i].style; b=this.masks[i].style; b.width=a.width=w+'px'; b.height=a.height=h+'px'; b.background="url("+bgImg+")"; b.backgroundPosition=(-i%col)*w+' '+parseInt(-i/col)*h; b.clip="rect(0 0 0 0)"; if(i==col*row-1)break }; }, __fxs__:[ function (el,x){this.__clip__(el,x(this.uw,0),x(this.uh,0),x(0,this.uw),x(0,this.uh))}, function (el,x){this.__clip__(el,x(this.uw,0),-1,x(0,this.uw),-1)}, function (el,x){this.__clip__(el,-1,x(this.uh,0),-1,x(0,this.uh))}, function (el,x){this.__clip__(el,-1,-1,-1,x(0,this.uh))}, function (el,x){this.__clip__(el,-1,-1,x(0,this.uw),-1)}, function (el,x){this.__clip__(el,-1,-1,x(0,this.uw),x(0,this.uh))}, function (el,x){this.__clip__(el,x(this.uw,0),x(this.uh,0),-1,-1)} ]};imgFx=function (shell,mask){ var arrImgs=shell.getElementsByTagName('IMG'); var pageBar=document.createElement('DIV'); pageBar.className='pageBar'; var num,timer,nextTimer,hover; this.nums=[]; shell.appendChild(pageBar); var This=this,pos=0,len=arrImgs.length; This.shell=shell; This.MaskDIV=mask; This.uw=This.w; This.uh=This.h; This.__createMask__(); var Case=[[32,1,1],[32,1,1],[1,1,5],[1,1,6],[1,1,1],[1,1,2],[1,8,2],[1,1,0],[1,1,5],[4,2,0],[8,3,0],[1,1,3],[1,1,4]]; var start=function (){ var cur=arrImgs[pos%len].src,index=Math.round((Case.length-1)*Math.random()); var opt=Case[index]; if(This.prevNum)This.prevNum.className=''; This.prevNum=This.nums[pos%len]; This.prevNum.className='current'; This.__setMask__(cur,opt[0],opt[1]); timer=This.__timeLine__(function (x){ for(var i=This.actCount;i--;){ This.__fxs__[opt[2]].call(This,This.masks[i],x) }; },function (){ This.shell.style.background='url('+cur+')'; pos++; if(!hover)nextTimer=setTimeout(start,2000); }); }; for(var i=0,l=arrImgs.length;i<l;i++){ num=document.createElement('A'); num.href="javascript:void(0)"; num.innerHTML=(i+1); this.nums.push(pageBar.appendChild(num)); num.numIndex=i; num.onclick=function (){ pos=this.numIndex; clearTimeout(timer); clearTimeout(nextTimer); start() } }; start()};imgFx.prototype=Tpl;try {document.execCommand("BackgroundImageCache", false, true);}catch(e){};var _51Fx=new imgFx( document.getElementById('imageFx'), document.getElementById('maskFx'));</script></html>
Tip: you can modify some code before running
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