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@@ -0,0 +1,130 @@
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+<!DOCTYPE html>
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+<html lang="en">
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+
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+<head>
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+ <meta charset="UTF-8">
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+ <meta http-equiv="X-UA-Compatible" content="IE=edge">
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+ <meta name="viewport" content="width=device-width, initial-scale=1.0">
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+ <title>Document</title>
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+ <style type="text/css">
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+ * {
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+ touch-action: none
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+ }
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+
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+ body {
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+ margin: 0;
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+ }
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+
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+ .container {
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+ width: 100%;
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+ overflow: hidden;
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+ position: relative;
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+ }
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+
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+ .layer-title {
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+ width: 100%;
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+ margin: 50px 0;
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+ text-align: center;
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+ }
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+
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+ .layer-action {
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+ position: absolute;
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+ bottom: 20px;
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+ width: 100%;
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+ text-align: center;
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+ }
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+
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+ .btn {
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+ background-color: #08c;
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+ border: 0;
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+ color: #fff;
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+ height: 30px;
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+ line-height: 30px;
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+ width: 100px;
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+ }
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+
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+ #underLayer {
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+ background-color: #eee;
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+ width: 90%;
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+ height: 500px;
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+ line-height: 500px;
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+ margin: 30px auto 1000px;
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+ text-align: center;
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+ }
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+
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+ #popupLayer {
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+ /*display: none;*/
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+ background-color: #fff;
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+ width: 80%;
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+ height: 200px;
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+ position: fixed;
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+ top: 50%;
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+ left: 50%;
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+ margin-left: -40%;
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+ margin-top: -100px;
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+ z-index: 1;
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+ }
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+
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+ #bgMask {
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+ position: fixed;
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+ top: 0;
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+ left: 0;
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+ right: 0;
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+ bottom: 0;
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+ background-color: rgba(0, 0, 0, 0.6);
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+ }
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+ </style>
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+</head>
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+
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+<body>
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+ <div class="container">
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+ <div id="underLayer">底层元素</div>
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+
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+ <div id="popupLayer">
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+ <div class="layer-title">弹出层</div>
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+ <div class="layer-action">
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+ <button class="btn" id="closePopup">关闭</button>
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+ </div>
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+ </div>
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+ </div>
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+ <div id="bgMask"></div>
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+ <script>
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+ var oClose = document.querySelector('#closePopup')
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+ var oUnder = document.querySelector('#underLayer')
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+ // 点击关闭按钮 遮罩层和框隐藏
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+ oClose.ontouchstart = function (e) {
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+
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+ e.preventDefault();
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+ // 框隐藏
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+ document.querySelector('#popupLayer').style.display = 'none'
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+ // 遮罩层
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+ document.querySelector('#bgMask').style.display = 'none'
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+ }
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+
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+ // oClose.onclick = function(){
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+ // document.querySelector('#popupLayer').style.display = 'none'
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+ // document.querySelector('#bgMask').style.display = 'none'
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+ // }
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+
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+ // 底层元素点击click
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+ oUnder.onclick = function () {
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+ alert('click')
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+ }
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+ /*
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+ 出现点透事件的条件：
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+ 有两层重叠的元素
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+ 上面的元素带有touch事件 下面的元素带有click事件 或者 a
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+
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+ 上层元素点击后 隐藏 但是 touch事件 结束 click事件有一个300ms的延迟 所以当关闭上层遮罩层时
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+ 还有一个click的延迟时间 触发点击事件
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+
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+ touchstart->touchmove->touched->click
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+
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+ 解决方案：
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+ 1.把上面的事件也换成click事件 都有300ms延迟事件 这样就不会立即触发了
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+ 2.把上层元素的事件通过event.preventDefault()取消事件默认行为
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+ */
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+ </script>
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+</body>
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+
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+</html>
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zsydgithub
