动画没有运行

var ele=document.getElementById("rabbit");

var phurl="rabbit-big.png";

var positions=["0 -854","-174 -854","-349 -852","-524 -852","-698 -852","-873 -848"];

animation(ele,phurl,positions);

function animation(ele,phurl,positions){

ele.style.backgroundImage="url(" + phurl + ")";

ele.style.backgroundRepeat="no-repeat";

var index=0;

function run(){

var position=positions[index].split("");

ele.style.backgroundPosition=position[0]+"px " +position[1]+ "px";

index++;

if(index>=positions.length){

index=0;

}

setTimeout(run,80);

}

run();

}

只显示了静态效果，那个空格问题也不存在，js没有报错

打开控制台建立本地服务器没做，是这个原因吗