div 自动缩放图片大小

来源：互联网发布：h game 知乎编辑：程序博客网时间：2024/05/24 00:37

http://www.w3school.com.cn/cssref/pr_background.asp

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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312" />
<title>无标题文档</title>
<style>
div {
width:600px;
height:100px;
border:1px solid red;
}
div img {
max-width:60%;
width:{
this.style.width=(this.offsetWidth>document.body.clientWidth*6/10)?"60%":"auto"});
overflow:hidden;
}
</style>

<div>
<img src="http://bbs.blueidea.com/images/blue/reply.gif" alt="" />

<img src="http://www.zhuatu.com/zhuatu/Star/StarWorld/Josie-1024-768/zhuatu_com6.jpg" alt="" />

</div>

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<div id="formbackground" style="position:absolute; z-index:-1;"><img src="10.jpg" height="100%" width="100%"/></div>

<script type="text/javascript">

$(function(){

$('#formbackground').height($(window).height());

$('#formbackground').width($(window).width());

});

</script>

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