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代码如下
<!DOCTYPE html>
<html>
<head>
<meta charset="utf8">
<title>js拖拽效果</title>
<script src="https://apps.bdimg.com/libs/jquery/2.1.4/jquery.min.js">
</script>
</head>
<body>
<div style="width: 1000px;height: 1000px;background-color: pink">
111111
<button onclick="showWindow()">点击显示弹框</button>
</div>
<!-- 遮罩层 -->
<div id="cover"
style="background: #000; position: absolute; left: 0px; top: 0px; width: 100%; filter: alpha(opacity=30); opacity: 0.3; display: none; z-index: 2 ">
</div>
<!-- 弹窗 -->
<div id="showdiv"
style="width: 80%; margin: 0 auto; height: 9.5rem; border: 1px solid #999; display: none; position: absolute; top: 40%; left: 10%; z-index: 3; background: #fff">
<!-- 标题 -->
<div style="background: #F8F7F7; width: 100%; height: 2rem; font-size: 0.65rem; line-height: 2rem; border: 1px solid #999; text-align: center;">
提示
</div>
<!-- 内容 -->
<div style="text-indent: 50px; height: 4rem; font-size: 0.5rem; padding: 0.5rem; line-height: 1rem; ">
js弹窗 js弹出DIV,并使整个页面背景变暗
</div>
<!-- 按钮 -->
<div style="background: #418BCA; width: 80%; margin: 0 auto; height: 1.5rem; line-height: 1.5rem; text-align: center;color: #fff;margin-top: 1rem; -moz-border-radius: .128rem; -webkit-border-radius: .128rem; border-radius: .128rem;font-size: .59733rem;"
onclick="closeWindow()">
确 定
</div>
</div>
</body>
<script type="text/javascript">
// 弹窗
function showWindow() {
$('#showdiv').show(); //显示弹窗
$('#cover').css('display', 'block'); //显示遮罩层
$('#cover').css('height', document.body.clientHeight + 'px'); //设置遮罩层的高度为当前页面高度
}
// 关闭弹窗
function closeWindow() {
$('#showdiv').hide(); //隐藏弹窗
$('#cover').css('display', 'none'); //显示遮罩层
}
</script>
</html>