jQuery+H5按空白鍵隨機抽獎程式碼

程式碼片段：

function run(){
if(!open){
<!-- 指定函數出現的速度，以毫秒計算-->
timer=setInterval(change,20);
//btn.removeClass('start').addClass('stop').text('停止');
open = true;
}else{
var height = $(imageName[nameNum]).css("height");
var width = $(imageName[nameNum]).css("width");

var name = $("#image").attr("src");
var imgClone = $("#image").clone(true).css("opacity",'0.7');
alldata.remove(name);
imgClone.css({ "position": "absolute", "top": "50px", "left": "50px"});
$("#imgDiv").parent().append(imgClone);
imgClone.animate({height:"150px",width:"150px"},400);
imgClone.animate({left:$(imageName[nameNum]).offset().left,top:$(imageName[nameNum]).offset().top},600);
imgClone.animate({height:height,width:width},350,function(){
$(imageName[nameNum]).attr("src",name);
nameNum = nameNum - 1;
});
clearInterval(timer);
//btn.removeClass('stop').addClass('start').text('開始抽獎');
open = false;
}
}