lovecoding
/
VIP32


			
				
					
						
						
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							<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <title>Document</title>
    <style>
      * {
        margin: 0;
        padding: 0;
        /* 触摸行为 */
        touch-action: none;
      }
      #container {
        width: 100%;
        position: relative;
      }
      #under {
        width: 90%;
        height: 500px;
        font-size: 24px;
        text-align: center;
        line-height: 500px;
        background: #eee;
        margin: 25px auto;
      }
      #dialog {
        width: 80%;
        height: 300px;
        background: #fff;
        position: absolute;
        top: 120px;
        left: 38px;
        z-index: 99;
      }
      #title {
        width: 100%;
        height: 200px;
        text-align: center;
        line-height: 200px;
      }
      #action {
        position: absolute;
        top: 200px;
        left: 100px;
      }
      #close {
        width: 100px;
        height: 35px;
        text-align: center;
        line-height: 35px;
        color: #fff;
        background: #00f;
      }
      #mask {
        width: 100%;
        background: rgba(0, 0, 0, .5);
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
      }
    </style>
  </head>
  <body>
    <div id="container">
      <div id="under">底层元素</div>
      <div id="dialog">
        <div id="title">弹出层</div>
        <div id="action">
          <div id="close">关闭</div>
        </div>
      </div>
      <div id="mask"></div>
    </div>
    <script>
        var close = document.getElementById("close");
        var under = document.getElementById("under");
        /**
         * 点透事件
         * 1.两层元素叠加到一起
         * 2.第一层是touch事件
         * 3.第二层是click事件或者a标签
         * 
         * 
         * 解决方案：
         * 1.event.preventDefault()
         * 2.将click事件全部换成touch
         * */
        close.ontouchstart = function(event) {
            // event.preventDefault();
            document.getElementById("dialog").style.display = 'none';
            document.getElementById("mask").style.display = 'none';
        }
        // touchstart => touchmove => touchend
        under.onclick = function() {
            alert("弹出");
        }
    </script>
  </body>
</html>