原生js实现半透明遮罩层效果具体代码【javascript】

web前端|js教程

原生js,半透明,遮罩层

web前端-js教程

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* {

margin: 0;

padding: 0;

font-size: 12px;

}

html, body {

height: 100%;

width: 100%;

}

#content {

background: #FFFFFF;

padding: 30px;

height: 100%;

}

#content a {

font-size: 30px;

color: #369;

font-weight: 700;

}

#alert { z-index:2;

border: 1px solid #369;

width: 300px;

height: 150px;

background: #e2ecf5;

z-index: 1000;

position: absolute;

display: none;

}

#alert h4 {

height: 20px;

background: #369;

color: #fff;

padding: 5px 0 0 5px;

}

#alert h4 span {

float: left;

}

#alert h4 span#close {

margin-left: 210px;

font-weight: 500;

cursor: pointer;

}

#alert p {

padding: 12px 0 0 30px;

}

#alert p input {

width: 120px;

margin-left: 20px;

}

#alert p input.myinp {

border: 1px solid #ccc;

height: 16px;

}

#alert p input.sub {

width: 60px;

margin-left: 30px;

}

#mask{ position:absolute; top:0; left:0; height:100%; width:100%; background:#000; opacity:0.3; display:none; z-index:1;}

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var myAlert = document.getElementById(“alert”);

var myMask=document.getElementById(‘mask’);

var reg = document.getElementById(“content”).getElementsByTagName(“a”)[0];

var mClose = document.getElementById(“close”);

reg.onclick = function()

{

myMask.style.display=”block”;

myAlert.style.display = “block”;

myAlert.style.position = “absolute”;

myAlert.style.top = “50%”;

myAlert.style.left = “50%”;

myAlert.style.marginTop = “-75px”;

myAlert.style.marginLeft = “-150px”;

document.body.style.overflow = “hidden”;

}

mClose.onclick = function()

{

myAlert.style.display = “none”;

myMask.style.display = “none”;

}