Web advertising special effects code sharing
The following editor will bring you a simple example of web advertising special effects. The editor thinks it’s pretty good, so I’ll share it with you now and give it as a reference. Let’s follow the editor and take a look.
In order to practice javascript, I made a simple demo. What is achieved is that the advertisement is slowly pulled out from the top to the maximum, then stays for 2 seconds, and then shrinks to a smaller size and can be closed. advertising special effects. The picture can be replaced with any other picture.
The code is as follows
<!DOCTYPE html>
<html>
<head lang="en">
<meta charset="UTF-8">
<title></title>
<style>
#ad{
width:962px;
display:none;
margin:0 auto;
overflow:hidden;
position:relative;
}
#main{
margin:0 auto;
width:960px;
height:1700px;
}
#close{
width:20px;
height:20px;
position:absolute;
top:0;
right:0;
font-size:16px;
line-height:20px;
text-align:center;
display:none;
background:yellowgreen;
}
</style>
</head>
<body>
<p id="ad">
<img src="ad.png" id="imgAd" width="962" height="386">
<img src="cur.png" id="curAd" width="1199" height="68">
<span id="close">x</span>
</p>
<p id="main"><img src="数字商品-10-23.jpg"></p>
<script>
var oImgAd=document.getElementById('imgAd');
var oad=document.getElementById('ad');
var ocur=document.getElementById('curAd');
var closeBtn=document.getElementById('close');
var h=0;
var maxH=oImgAd.height;
var minH=ocur.height;
function down()
{
if(h<maxH)
{
h+=5;
oad.style.height=h+"px";
oad.style.display="block";
setTimeout(down,5);
}
else{
setTimeout(up,2000);
}
}
function up(){
if(h>minH){
h-=5;
oad.style.height=h+"px";
setTimeout(up,5);
}
else{
oImgAd.style.display='none';
closeBtn.style.display='block';
}
}
closeBtn.onclick=function(){
oad.style.display='none';
}
setTimeout(down,1000);
</script>
</body>
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