图片加载完成再执行事件的实例

//图片加载function load(imgSrc,callback) { var imgs = []; var c = 0; for (var i = 0; i < imgSrc.length; i++) {  imgs[i] = new Image();  imgs[i].src = imgSrc[i];  imgs[i].onload = function(){   c++   if(c == imgSrc.length){    if(callback){     callback();    }   }  } } return imgs;}