Example analysis of how to simply implement the jQuery pop-up effect-JS Tutorial-php.cn

Example analysis of how to simply implement the jQuery pop-up effect

小云云

Release： 2017-12-26 14:45:38

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This article mainly teaches you how to simply implement the jQuery pop-up effect. It has certain reference value. Interested friends can refer to it. I hope it can help everyone.

The example in this article shares the specific code for jQuery pop-up window effect display for your reference. The specific content is as follows

<!DOCTYPE html>
<html lang="en">
<head>
 <meta charset="UTF-8">
 <title>弹窗</title>
  <script type="text/javascript" src="../jquery-3.2.1.min.js"></script>

  <style type="text/css">
   *{margin: 0px;padding: 0px;}
   #login{height:300px;width: 300px;border: 1px solid #ddd;position: absolute; }
   #close{position: absolute;right: 0px;top: 0px;}
  </style>


  <script type="text/javascript">

  // JS创建一个p标签，也就是节点元素
  // window.onload=function(){
  //  document.createElement(&#39;p&#39;);
  // }

  // 使用jQuery创建：$(&#39;<p>&#39;);带尖括号的是创建，不带是选择的意思
  $(function(){
   // var op=$(&#39;<p>&#39;);
   // $(&#39;body&#39;).append(op);

   $(&#39;input&#39;).click(function(){
   var oLogin=$(&#39;<p id="login"><p>用户名<input type="text"></p><p>密码<input type="text"></p><p id="close">X</p></p>&#39;);//此功能就相当于body中注释的代码

   $(&#39;body&#39;).append(oLogin);
   oLogin.css(&#39;left&#39;,($(window).width()-oLogin.outerWidth())/2);
   oLogin.css(&#39;top&#39;,($(window).width()-oLogin.outerHeight())/2);//是弹窗能够出现在浏览器的中间

   $("#close").click(function(){
    oLogin.remove();
   })

   // jquery 中$()里window不用加引号
   // 添加resize()浏览器窗口大小改变
   // scroll():滚动条，以下的作用是当滚动条滚动时候，弹窗的位置也不变化
   $(window).on("resize scroll",function(){
    oLogin.css(&#39;left&#39;,($(window).width()-oLogin.outerWidth())/2+$(window).scrollLeft());
    oLogin.css(&#39;top&#39;,($(window).width()-oLogin.outerHeight())/2+$(window).scrollTop());
   })

   });

  });

  </script>
</head>
<body>
 <input type="button" value="点击">
 <!-- <p id="login">
  <p>用户名<input type="text"></p>
  <p>密码<input type="text"></p>
  <p id="close">X</p>
 </p> -->
</body>
</html>

Copy after login

Points used:

jQuery creation: $('

');

Pop-up window location:

oLogin.css(&#39;left&#39;,($(window).width()-oLogin.outerWidth())/2);
oLogin.css(&#39;top&#39;,($(window).width()-oLogin.outerHeight())/2);

Copy after login

When the scroll bar scrolls, the position of the pop-up window changes:

$(window).on("resize scroll",function(){
oLogin.css(&#39;left&#39;,($(window).width()-oLogin.outerWidth())/2+$(window).scrollLeft());
oLogin.css(&#39;top&#39;,($(window).width()-oLogin.outerHeight())/2+$(window).scrollTop());
   })

Copy after login

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