Some time ago, I confessed that the webpage was very interesting, so I tried to watch the video and wrote the code, but why was the script for automatically changing the background not executed? Please give me some advice## Only one of the two scripts has been implemented
##
<!doctype html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="Keywords" content="">
<meta name="Description" content="">
<title>你是我的最爱--000</title>
<style type="text/css">
*{margin:0;padding:0;}
#bg_body{
background:url(image/1.jpg) no-repeat center #eee;
background-size:cover;
/* background-attachment:fixed;
height:1000px; */
}
/*start top*/
.top{width:400px;height:100px;margin:60px auto;font-size:30px;font-family:"华文行楷";color:#fff;}
/*end top*/
/*start box*/
.box{width:310px;height:310px;margin:auto;perspective:800px;}
.box .pic{position:relative;transform-style:preserve-3d;animation:play 10s linear infinite;}/*匀速 无线运行*/
.box ul li{list-style:none;position:absolute;top:0;left:0;}
/*end box*/
#text{width:980px;height:130px;color:#0099ff;margin:auto;font-size:30px;font-family:"华文行楷";}
/*定义一个关键帧*/
@keyframes play{
from{transform:rotateY(0deg);}
to{transform:rotateY(360deg);}
}
</style>
<script type="text/javascript">
window.onload=function typing (){
var oBody=document.getElementById('bg_body');
var oS=oBody.style;
function BgChenge(){
oS.backgroundImage='url(image/'+(parseInt(Math.random() * 6) + 1)+'.jpg)';
};
function BgPosition(){
oS.backgroundRepeat='no-repeat';
oS.backgroundPosition='center';
oS.backgroundAttachment='fixed';
};
function LoadMethod(){
BgChenge();
BgPosition()
};
setInterval(LoadMethod,1000);
};
</script>
</head>
<body id="bg_body">
<!--start top-->
<p class="top">
<marquee behavior=alternate>时光不老 我们不散</marquee>
</p>
<!--end top-->
<!--start box-->
<p class="box">
<p class="pic">
<ul>
<li><img src="image/1.png"height=""width=""alt=""/></li>
<li><img src="image/2.png"height=""width=""alt=""/></li>
<li><img src="image/3.png"height=""width=""alt=""/></li>
<li><img src="image/4.png"height=""width=""alt=""/></li>
<li><img src="image/5.png"height=""width=""alt=""/></li>
<li><img src="image/6.png"height=""width=""alt=""/></li>
</ul>
</p>
</p>
<!--end box-->
<!--star text-->
<p id="text"></p>
<!--end text-->
<embed src="music/告白气球 - 周杰伦.mp3" Volume="30" width="0" height="0"></embed>
<script src="js/jquery.min.js"></script>
<script src="js/jquery.min.js"></script>
<script src="js/jquery.snow.min.js"></script>
<script>
//拿到每一个li
$(".pic ul li").each(function(i){
var deg = 360/$(".pic ul li").size();
//当前li对象
$(this).css({"transform":"rotateY("+deg*i+"deg)translateZ(216px)"});
$.fn.snow({
minSize:10,maxSize:15,newOn:500,flakeColo:"#ffffff"
});
});
var i = 0;
var str ="能够遇见你是我最大的幸运，有了你生活变得丰富多彩，有了你，世界变得如此迷人，你是我的世界，我的世界是你，对我来说，不是在最美好的时光遇见了你，而是遇见你以后都是最美好的时光！"
window.onload = function typing(){
//js 获取p
var myp = document.getElementById("text");
myp.innerHTML += str.charAt(i);
i++;
var id = setTimeout(typing,100);
if(i==str.length){
clearTimeout(id);
}
}
</script>
</body>
</html>
![[Web front-end] Node.js quick start](https://img.php.cn/upload/course/000/000/067/662b5d34ba7c0227.png)
Use
window.addEventListener('load',function(){})to replacewindow.onload = function(){}Keywords:
DOM0 level eventsandDOM2 level eventsThe window.onload event is unique in js. No matter how many you write, only one will be executed, and it is the last one, so you can consider using $(function(){}) in jq. It will not appear due to The order of the browser will change the rendering, and the browser will render according to the amount of $(function(){}).
The window.onload event can only be executed once. If you have already referenced jquery.min.js, you can try changing it to $(function(){}), which can be referenced multiple times.