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How to use Layui to develop a social network application that supports user login and registration

WBOYOriginal: 2023-10-27 08:01:021293browse

With the rapid development of the Internet, social network applications have become indispensable in people's daily lives part. When developing such applications, a powerful front-end framework is indispensable. Layui is an excellent front-end UI framework. It provides rich components and simple and clear APIs to help us quickly build powerful and beautiful web applications. This article will introduce how to use Layui to develop a social network application that supports user login and registration, and provide specific code examples.

Preparation
First of all, we need to prepare Layui related resources. You can download the latest version of Layui compressed package from the Layui official website (www.layui.com). After unzipping, introduce it into our project. You can place the layui.css file in the project's style folder, and the layui.js file in the project's script folder.
Basic layout
Social network applications usually include header navigation bar, sidebar, content area and other parts. We can use Layui's layout components to build these basic components.

<body>
  <div class="layui-layout layui-layout-admin">
    <!-- 头部导航栏 -->
    <div class="layui-header">
      <!-- logo -->
      <div class="layui-logo">社交网络</div>
      
      <!-- 用户登录信息 -->
      <ul class="layui-nav layui-layout-right">
        <li class="layui-nav-item">
          <a href="javascript:;"><img  src="avatar.jpg" class="layui-nav-img" alt="How to use Layui to develop a social network application that supports user login and registration" >用户名</a>
          <dl class="layui-nav-child">
            <dd><a href="">个人中心</a></dd>
            <dd><a href="">退出登录</a></dd>
          </dl>
        </li>
      </ul>
    </div>
    
    <!-- 侧边栏 -->
    <div class="layui-side">
      <ul class="layui-nav layui-nav-tree">
        <li class="layui-nav-item layui-nav-itemed">
          <a href=""><i class="layui-icon layui-icon-home"></i>首页</a>
        </li>
        <li class="layui-nav-item">
          <a href=""><i class="layui-icon layui-icon-user"></i>用户管理</a>
        </li>
        <li class="layui-nav-item">
          <a href=""><i class="layui-icon layui-icon-friends"></i>好友管理</a>
        </li>
      </ul>
    </div>
    
    <!-- 内容区域 -->
    <div class="layui-body">
      <!-- 内容 -->
    </div>
  </div>
</body>

User login and registration
Social network applications must support user login and registration functions. We can use Layui's form components and Layer pop-up plug-ins to achieve these functions.

<!-- 登录表单 -->
<form class="layui-form" action="">
  <div class="layui-form-item">
    <label class="layui-form-label">用户名</label>
    <div class="layui-input-block">
      <input type="text" name="username" required  lay-verify="required" placeholder="请输入用户名" autocomplete="off" class="layui-input">
    </div>
  </div>
  <div class="layui-form-item">
    <label class="layui-form-label">密码</label>
    <div class="layui-input-block">
      <input type="password" name="password" required lay-verify="required" placeholder="请输入密码" autocomplete="off" class="layui-input">
    </div>
  </div>
  <div class="layui-form-item">
    <div class="layui-input-block">
      <button class="layui-btn" lay-submit lay-filter="login">登录</button>
      <button type="reset" class="layui-btn layui-btn-primary">重置</button>
    </div>
  </div>
</form>

<!-- 注册表单 -->
<form class="layui-form" action="">
  <div class="layui-form-item">
    <label class="layui-form-label">用户名</label>
    <div class="layui-input-block">
      <input type="text" name="username" required  lay-verify="required" placeholder="请输入用户名" autocomplete="off" class="layui-input">
    </div>
  </div>
  <div class="layui-form-item">
    <label class="layui-form-label">密码</label>
    <div class="layui-input-block">
      <input type="password" name="password" required lay-verify="required" placeholder="请输入密码" autocomplete="off" class="layui-input">
    </div>
  </div>
  <div class="layui-form-item">
    <div class="layui-input-block">
      <button class="layui-btn" lay-submit lay-filter="register">注册</button>
      <button type="reset" class="layui-btn layui-btn-primary">重置</button>
    </div>
  </div>
</form>

<!-- JavaScript代码 -->
<script>
  //监听登录表单提交
  form.on('submit(login)', function(data){
    //请求服务器进行登录验证
    //...
    return false; //阻止表单跳转
  });
  
  //监听注册表单提交
  form.on('submit(register)', function(data){
    //请求服务器进行注册处理
    //...
    layer.msg('注册成功');
    return false; //阻止表单跳转
  });
</script>

Data interaction
In social network applications, data interaction must be carried out with the back-end server. We can use Layui's Ajax module to send HTTP requests and interact with the backend server.

//模拟用户登录
function login(username, password) {
  //发送登录请求
  $.ajax({
    url: '/login', //后端登录接口
    type: 'post',
    data: {
      username: username,
      password: password
    },
    success: function(res){
      if(res.code === 200){
        //登录成功
        layer.msg('登录成功');
        //跳转到用户主页
        window.location.href = '/user_home'; 
      } else {
        //登录失败
        layer.msg('登录失败');
      }
    },
    error: function(){
      //请求失败
      layer.msg('请求失败');
    }
  })
}

//模拟用户注册
function register(username, password) {
  //发送注册请求
  $.ajax({
    url: '/register', //后端注册接口
    type: 'post',
    data: {
      username: username,
      password: password
    },
    success: function(res){
      if(res.code === 200){
        //注册成功
        layer.msg('注册成功');
        //跳转到登录页面
        window.location.href = 'login.html'; 
      } else {
        //注册失败
        layer.msg('注册失败');
      }
    },
    error: function(){
      //请求失败
      layer.msg('请求失败');
    }
  })
}

The above are the basic steps and code examples for using Layui to develop a social network application that supports user login and registration. Through the above steps, we can quickly build a simple social network application front-end framework and implement user login and registration functions. Of course, in actual development, it is also necessary to combine back-end technology for data interaction and processing, and to improve various functions, but this article mainly introduces the front-end development part. I hope this article can be helpful to you, and I wish you good results in the development of social network applications!

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