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How to use the Layui framework to develop a news reading application that supports instant news push

WBOYOriginal: 2023-10-26 11:54:111007browse

With the rapid development of the Internet, the way people obtain information is also constantly evolving. As a simple and efficient front-end development framework, Layui has been widely recognized and used among developers. This article will introduce how to use the Layui framework to develop a news reading application that supports instant news push, and provide corresponding code examples.

Preparatory work
Before you start, make sure you have successfully installed the browser and Node.js. Then, use the npm command to install layui globally:

npm install layui -g

After the installation is complete, you can use the layui -V command to check the version information of Layui.

Create the project and import Layui
Create a new folder in the specified directory as the root directory of the project. Then, create the index.html file in this directory and import Layui’s core style and script files:

<!DOCTYPE html>
<html>
<head>
  <meta charset="UTF-8">
  <title>新闻阅读应用</title>
  <link rel="stylesheet" href="path/to/layui/css/layui.css">
</head>
<body>
  <!-- 页面内容 -->
  
  <script src="path/to/layui/layui.js"></script>
  <script>
    layui.config({
      base: 'path/to/layui/module/' // 插件所在目录
    }).extend({
      // 导入需要的插件
    }).use(['element'], function(){
      var element = layui.element;
  
      // 一些初始化操作
  
    });
  </script>
</body>
</html>

In the above code, you need to change path/to/layui Replace with the path where the actual Layui framework is located. If you place the Layui framework directly in the same directory as index.html, you can set the path directly to ./layui.

Create News List
At the  mark of the page, we will create a simple news list for display The title and brief content of the news. First, import the list module provided by Layui and use this module to create a ul element:

<div class="layui-container">
  <ul class="layui-timeline" id="newsList"></ul>
</div>

Then, after the page is loaded, use Ajax to request the background interface to obtain news data and dynamically generate list items :

layui.use(['element', 'jquery', 'layer'], function(){
  var element = layui.element;
  var $ = layui.$;
  
  $(function(){
    $.ajax({
      url: '/api/getNewsList',
      success: function(data){
        var newsList = $('#newsList');
        for(var i in data){
          var newsItem = $('<li class="layui-timeline-item"></li>');
          newsItem.append('<i class="layui-icon layui-timeline-axis">&#xe63f;</i>');
          var content = $('<div class="layui-timeline-content layui-text"></div>');
          content.append('<h3 class="layui-timeline-title">'+data[i].title+'</h3>');
          content.append('<p>'+data[i].summary+'</p>');
          newsItem.append(content);
          newsList.append(newsItem);
        }
        element.render('timeline');
      },
      error: function(){
        layer.msg('获取新闻列表失败');
      }
    });
  });
});

In the above code, /api/getNewsList is the path of a background interface used to obtain news data. You can modify this path according to the specific situation.

Implementing the news push function
Before implementing the instant news push function, we need to introduce the Layim module and modify the index.html file:

<script>
  layui.config({
    base: 'path/to/layui/module/'
  }).extend({
    layim: 'layim/layim',
  }).use(['element', 'layim', 'jquery', 'layer'], function(){
    var element = layui.element;
    var layim = layui.layim;
    var $ = layui.$;
    var layer = layui.layer;
  
    layim.config({
      notice: true // 打开消息提醒
    });
  
    // 连接即时通讯服务器
    layim.connect();
  
    // 监听新消息事件
    layim.on('chat', function(res){
      // 处理新消息
    });
  
    // 监听退出事件
    layim.on('logout', function(){
      // 处理退出事件
    });
  });
</script>

In the above code , path/to/layui/module/ is the directory where the Layim module is located. You need to modify it according to the actual situation.

Summary
This article introduces how to use the Layui framework to develop a news reading application that supports instant news push. By introducing related modules of Layui, we can quickly build a concise and efficient front-end page, and interact with the back-end interface for data to realize news display and push functions. I hope this article will be helpful to you in developing a news reading application using Layui.

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