基于JavaScript实现百叶窗动画效果不只单纯flas可以实现

function all(books){for(var i=;i<self.rows;i++) {for (var j = ; j < self.columns; j++) {if(!books[i][j])return false;}}return true;}function resetBooks(books){for(var i=;i<self.rows;i++) {for (var j = ; j < self.columns; j++) {books[i][j]=false;}}return true;}var self=this,timer=null,_iindex= ;var initdir=[[[,],[,]],[[-,],[,]],[[,-],[-,]],[[,-],[,]],[[,-],[,],[,],[-,]]],dir=initdir[];var weight=[,,,,];var initpos=[[{x:,y:-}],[{x:self.columns-,y:-}],[{x:self.columns-,y:self.rows}],[{x:,y:self.rows}],[{x:self.columns/,y:self.rows/}]];timer=setInterval(function(){var n=[];for(var i=;i<self.preDivs.length;i++){var _div=null,x= ,y=;for(var j=;j<dir.length;j++){x=self.preDivs[i].x+dir[j][];y=self.preDivs[i].y+dir[j][];if(x>=&&y>=&&x<self.columns&&y<self.rows&&!self.books[y][x]){self.books[y][x]=true;_div=self.zzDivStatck[y][x];n.push({x:x,y:y});_div.style.backgroundImage = "url(" + self.zzImages[_iindex] + ")";_div.style.backgroundPositionX = (-x * self.zzDivW) + "px ";_div.style.backgroundPositionY = (-y * self.zzDivH) + "px";}}}self.preDivs=n;if(all(self.books)){resetBooks(self.books);var _r=util.randomWeight(weight);self.preDivs = initpos[_r];dir=initdir[_r];_iindex++;}if(_iindex>=+self.zzImages.length){_iindex=;}},);