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How to create a pop-up window effect with jQuery

php中世界最好的语言Original: 2017-12-31 11:36:592222browse

This time I will show you how to create a pop-up window effect with jQuery. The pop-up window effect is often used in our projects. This article will give you a good analysis.

<!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
  $(function(){
   // var oDiv=$(&#39;<p>&#39;);
   // $(&#39;body&#39;).append(oDiv);
  
   $(&#39;input&#39;).click(function(){
   var oLogin=$(&#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>

Points used:

jQuery creation:

$(&#39;<p>&#39;);

Position of the pop-up window:

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

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());
   })

I believe you have mastered the method after reading the above introduction. For more exciting information, please pay attention to other related articles on the php Chinese website!

How to create a pop-up window effect with jQuery

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