How to write a login page using ajax

This time I will show you how to write a login page with ajax. What are the precautions for writing a login page with ajax? The following is a practical case, let's take a look.

The full name of AJAX is Asynchronous

JavaScript and XML (asynchronous JavaScript and XML).

Advantages of ajax:

1. The biggest point is that the page does not refresh, and the user experience is very good.

　2. Use asynchronous mode to communicate with the server, with faster response capability.
　3. You can transfer some of the work previously burdened by the server to the client, using the client's idle capacity to process it, reducing the burden on the server and bandwidth, and saving space and broadband rental costs. And to reduce the burden on the server, the principle of ajax is to "fetch data on demand", which can minimize the burden on the server caused by redundant requests and responses.
　4. Based on standardized and widely supported technology, there is no need to download plug-ins or small programs.
　5. Ajax can make Internet applications smaller, faster, and more friendly.

Here I use ajax to write a simple login page: The first thing used is the database login table:

The following is the code of the login page, first To introduce the jquery package

 <meta>
 <title>无标题文档</title>
 <script></script> /*引入jquery包*/


<h2 id="登录页面">登录页面</h2>
<p>用户名：<input></p>
<p>密码：<input></p>
<p><input></p>1112

The above is the detailed content of How to write a login page using ajax. For more information, please follow other related articles on the PHP Chinese website!