js动态改变VID图片背景图片

js动态改变VID图片背景图片

function $(id) {
return document.getElementById(id);
}

//创建一个对象
var oPic = {};
//存放图片的数组
oPic.imgs =
["01-1.jpg","01.jpg","02-1.jpg","02.jpg","03-1.jpg","03.jpg",
"04-1.jpg","04.jpg","05-1.jpg","05.jpg","06-1.jpg","06.jpg",
"07-1.jpg","07.jpg","08-1.jpg","08.jpg","09-1.jpg","09.jpg",
"10-1.jpg","10.jpg","11-1.jpg","11.jpg","12-1.jpg","12.jpg"];
oPic.curPic = 0;
oPic.timer = null;
oPic.img = null;
var imgsrc = null;

//根据图片数组下标循环切换图片
function changeImage1() {
if(oPic.curPic < oPic.imgs.length-1){
oPic.curPic++;
}else{
oPic.curPic = 0;
}
imgsrc = "assets/images/"+oPic.imgs[oPic.curPic];
$("divId").style.backgroundImage="url("+imgsrc+")";
oPic.timer=window.setTimeout(changeImage2,3000);
}

function changeImage2() {
if(oPic.curPic < oPic.imgs.length-1){
oPic.curPic++;
}else{
oPic.curPic = 0;
}
imgsrc = "assets/images/"+oPic.imgs[oPic.curPic];
$("divId").style.backgroundImage="url("+imgsrc+")";
oPic.timer=window.setTimeout(changeImage1,300);
}

function init() {
//为标签指定初始图片地址
imgsrc = "/assets/images/"+oPic.imgs[oPic.curPic];
$("divId").style.backgroundImage="url("+imgsrc+")";
oPic.timer=window.setTimeout(changeImage1,1000);
}
//在加载时初始化，没有的化不显示内容
window.onload=init;

<div id="divId" class="div_conter" style="background-size:100% 100%"></div>
.....
<script language="JavaScript" src="/assets/js/my_js/changePic.js"></script>