var images = new Array();
var loadPrograss=0;
var persent=0;
function preload() {
for (i = 0; i < preload.arguments.length; i++) {
images[i] = new Image();
images[i].src = preload.arguments[i];
loadPrograss++;
persent=loadPrograss/preload.arguments.length*100;
$(‘.d1‘).html(persent+‘%‘);
}
};
preload(
"images/1.png",
"images/2.png",
"images/3.png",
"images/4.png",
"images/5.png",
"images/6.png",
"images/7.png",
"images/8.png",
"images/9.png",
"images/10.png",
"images/11.png",
"images/12.png",
"images/13.png",
"images/14.png",
"images/15.png",
"images/16.png",
"images/17.png",
"images/18.png",
"images/19.png",
"images/20.png",
"images/1.gif",
"images/2.gif",
"images/3.gif",
"images/4.gif",
"images/5.gif",
"images/6.gif",
"images/7.gif",
"images/8.gif",
"images/9.gif",
"images/10.gif"
);
if(persent==100){
alert(333);
}
原文：http://www.cnblogs.com/zhouzhou666/p/6208495.html