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##1.图片加载 慢 若您遇到图片加载很慢的问题,对这种情况,手机开发一般用canvas方法加载: 具体的canvas API 参见:http://javascript.ruanyifeng.com/htmlapi/canvas.html 下面举例说明一个canvas的例子: <li><canvas></canvas></li> js动态加载图片和li 总共举例17张图片! var total=17; var zWin=$(window); var render=function(){ var padding=2; var winWidth=zWin.width(); var picWidth=Math.floor((winWidth-padding*3)/4); var tmpl =''; for (var i=1;i<=totla;i++){ var p=padding; var imgSrc='img/'+i+'.jpg'; if(i%4==1){ p=0; } tmpl +='<li style="width:'+picWidth+'px;height:'+picWidth+'px;padding-left:'+p+'px;padding-top:'+padding+'px;"><canvas id="cvs_'+i+'"></canvas></li>'; var imageObj = new Image(); imageObj.index = i; imageObj.onload = function(){ var cvs =$('#cvs_'+this.index)[0].getContext('2d'); cvs.width = this.width; cvs.height=this.height; cvs.drawImage(this,0,0); } imageObj.src=imgSrc; } } render();