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前言:

目前看官们对“js遮罩层覆盖部分页面”大致比较讲究,朋友们都需要学习一些“js遮罩层覆盖部分页面”的相关资讯。那么小编也在网上网罗了一些关于“js遮罩层覆盖部分页面””的相关内容,希望朋友们能喜欢,我们快快来学习一下吧!

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" ";>

<html xmlns=";>

<head>

<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />

<title>demo</title>

<style>

body,h1,h2,h3,h4,h5,h6,hr,p,blockquote,dl,dt,dd,ul,ol,li,pre,form,fieldset,legend,button,input,textarea,th,td{margin:0;padding:0;}

body,button,input,select,textarea{font:12px/1.5 tahoma,arial,\5b8b\4f53;}

h1,h2,h3,h4,h5,h6{font-size:100%;}

address,cite,dfn,em,var{font-style:normal;}

code,kbd,pre,samp{font-family:courier new,courier,monospace;}

small{font-size:12px;}

ul,ol{list-style:none;}

a{text-decoration:none;}

a:hover{text-decoration:underline;}

sup{vertical-align:text-top;}

sub{vertical-align:text-bottom;}

legend{color:#000;}

fieldset,img{border:0;}

button,input,select,textarea{font-size:100%;}

table{border-collapse:collapse;border-spacing:0;}

.clear{clear: both;float: none;height: 0;overflow: hidden;}

p{font-size: 100px;}

#mask{

background: #000;

opacity: 0.75;

filter: alpha(opacity=75);

height: 1000px;

width: 100%;

position: absolute;

left: 0;

top: 0;

z-index: 1000;

}

#login{

position: fixed;

left: 30%;

top: 30%;

z-index:1001;

}

.loginCon{

width: 670px;

height: 380px;

background: #fff;

border:5px solid #F01400;

}

#close{

width: 30px;

height: 30px;

background: blue;

cursor: pointer;

position: absolute;

right: 10px;

top: 10px;

}

#btnLogin{

width: 80px;

height: 40px;

background: #F01400;

margin:0 auto;

display: block;

cursor: pointer;

border-style: none;

color: #fff;

font-size: 16px;

}

</style>

</head>

<body>

<button id="btnLogin">登录</button>

<!--

<div id="mask"></div>

<div id="login">

<div class="loginCon">

<div id="close"></div>

</div>

</div>

-->

<script type="text/javascript">

function openNew(){

//获取页面body!内容!的高度和宽度

var sHeight=document.documentElement.scrollHeight;

var sWidth=document.documentElement.scrollWidth;

//获取可视区域高度,宽度与页面内容的宽度一样

var wHeight=document.documentElement.clientHeight;

//创建遮罩层div并插入body

var oMask=document.createElement("div");

oMask.id="mask";

oMask.style.height=sHeight+"px";

//宽度直接用100%在样式里

document.body.appendChild(oMask);

//创建登录层div并插入body

var oLogin=document.createElement("div");

oLogin.id="login";

oLogin.innerHTML="<div class='loginCon'><div id='close'></div></div>"

document.body.appendChild(oLogin);

//获取login的宽度和高度并设置偏移值

var dHeight=oLogin.offsetHeight;

var dWidth=oLogin.offsetWidth;

oLogin.style.left=(sWidth-dWidth)/2+"px";

oLogin.style.top=(wHeight-dHeight)/2+"px";

//获取关闭按钮

var oClose=document.getElementById("close");

oMask.onclick=oClose.onclick=function(){

document.body.removeChild(oMask);

document.body.removeChild(oLogin);

}

}

window.onload=function(){

var oBtn=document.getElementById("btnLogin");

oBtn.onclick=function(){

openNew();

}

}

</script>

</body>

</html>

标签: #js遮罩层覆盖部分页面