實例｜js特效遮罩層（彈出層）
今天中公優就業的老師給大家點乾貨，如何做js特效遮罩層（彈出層）。歡迎收藏哈~
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title></title>
<style>
* {
margin: 0px;
padding: 0px;
}
.mask {
width: 100%;
/*height: 500px;*/
position: fixed;
top: 0px;
left: 0px;
background-color: black;
opacity: 0.5;
}
.show {
width: 500px;
height: 300px;
position: fixed;
top: 100px;
left: 300px;
background-color: white;
z-index: 999;
}
</style>
</head>
<body>
<!--遮罩層-->
<div class="mask" hidden="hidden"></div>
<!--彈出層-->
<div class="show" hidden="hidden">
</div>
<input type="button" value="點 出 來" onclick="show_plus()" />
</body>
</html>
<script>
var mask = document.getElementsByClassName("mask")[0];
var show = document.getElementsByClassName("show")[0];
var c_height = document.documentElement.clientHeight;
var c_width = document.documentElement.clientWidth;
mask.style.height = c_height + "px";
show.style.left = c_width / 2 - 250 + "px";
show.style.top = c_height / 2 - 150 + "px";
function show_plus() {
mask.removeAttribute("hidden");
show.removeAttribute("hidden");
}
mask.onclick = function() {
mask.setAttribute("hidden", "hidden");
show.setAttribute("hidden", "hidden");
}
window.onresize = function() {
var c_height = document.documentElement.clientHeight;
var c_width = document.documentElement.clientWidth;
mask.style.height = c_height + "px";
show.style.left = c_width / 2 - 250 + "px";
show.style.top = c_height / 2 - 150 + "px";
}
</script>
(轉自博客園)
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