【Javascript Demo】遮罩层和弹出层简单实现

时间：2023-03-08 20:09:23

最近纠结于遮罩层和弹出层的实现，终于搞定了个简单的版本。示例和代码如下，点击按钮可以看到效果：

1.示例:

2.代码：

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<html xmlns="http://www.w3.org/1999/xhtml">

       <head>

               <meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>

              <title>遮罩层和弹出层简单实现</title>

              <script type="text/javascript">

                  function show() {

                      var div = document.createElement("div");

                      var div_show = document.getElementById("div_show");

                      div.style.width = Math.max(document.documentElement.scrollWidth, document.documentElement.clientWidth) + "px";

                      div.style.height = Math.max(document.documentElement.scrollHeight, document.documentElement.clientHeight) + "px";

                      div.style.backgroundColor = "#000000";

                      div.style.position = "absolute";

                      div.style.opacity = 0.5;

                      div.style.left = 0;

                      div.style.top = 0;

                      div.id = "zhebiceng";

                      div.style.zIndex = 100;

                      top.document.getElementById("div_body").appendChild(div);

                      div_show.style.display = "block";

                  }

                  function play_show() {

                      var div = top.document.getElementById("zhebiceng");

                      var div_show = document.getElementById("div_show");

                      div_show.style.display = "none";

                      div.style.display = "none";

                      div.parentNode.removeChild(div);

                  }

              </script>

       </head>

       <body>

       <div id="div_body">

       <input type="button" value="click" onclick="show()" />

       </div>

        <div id="div_show" style=" background:white;display: none;height: 400px;left: 80px;  position: fixed;top: 88px; width: 80%;z-index: 99999;">

       <input type="button" value="关闭" onclick="play_show();" style="float: right;" />

       </div>

       </body>

</html>

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