jQuery实现简单弹窗遮罩效果
效果图：
图（1）初始图
图（2）点击按钮后
代码如下：
<!DOCTYPE HTML>
<html>
<head>
<meta charset="UTF-8" />
<title></title>
<style>
#mask {
position: absolute;
top: 0;
left: 0;
width: 100%;
height: 100%;
z-index: 999;
background: #666;
opacity: 0.5;
filter: alpha(opacity=50)-moz-opacity: 0.5;
display: none;
}
.popup {
position: absolute;
left: 50%;
width: 600px;
height: 200px;
background: #fff;
z-index: 1000;
border: 1px solid #333;
display: none;
}
.btn_close {
position: absolute;
top: 5px;
right: 5px;
}
</style>
</head>
<body>
<button class="btn_show">遮罩层</button>
<div id="mask"></div>
<div class="popup">
<button class="btn_close">x</button>
</div>
<script src="http://cdn.bootcss.com/jquery/3.1.1/jquery.js"></script>
<script>
$(function() {
$('.btn_show').click(function() {
$('#mask').css({
display: 'block',
height: $(document).height()
})
var $Popup = $('.popup');
$Popup.css({
left: ($('body').width() - $Popup.width()) / 2+ 'px',
top: ($(window).height() - $Popup.height()) / 2 + $(window).scrollTop() + 'px',
display: 'block'
})
})
$('.btn_close').click(function() {
$('#mask,.popup').css('display', 'none');
})
})
</script>
</body>
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