Python Flask: 用户登录网页设计

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效果图

Python22011602.png

实操步骤

网页头

<!DOCTYPE html>
<html>
<head>
    <meta charset="utf-8">
    <title>读书笔记</title>
    <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css">
    <link rel="stylesheet" href="/static/css/style.css">
    <script src="https://cdn.bootcss.com/jquery/2.2.4/jquery.js"></script>
    <script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/js/bootstrap.min.js"></script>
  </head>


</html>

导航栏

   <nav class="navbar navbar-default">
    <div class="container">
      <div class="navbar-header">
        <button type="button" class="navbar-toggle collapsed" data-toggle="collapse" data-target="#navbar" aria-expanded="false" aria-controls="navbar">
          <span class="sr-only">Toggle navigation</span>
          <span class="icon-bar"></span>
          <span class="icon-bar"></span>
          <span class="icon-bar"></span>
        </button>
        <a class="navbar-brand" href="/">学习笔记</a>
      </div>
      <div id="navbar" class="collapse navbar-collapse">
        <ul class="nav navbar-nav">
          <li><a href="/">主页</a></li>
          <li><a href="/articles">笔记</a></li>
          <li><a href="/about">关于</a></li>
        </ul>
        <ul class="nav navbar-nav navbar-right">
          
            <li><a href="/register">注册</a></li>
            <li><a href="/login">登录</a></li>
          
        </ul>
      </div><!--/.nav-collapse -->
    </div>
  </nav>

注册表单

   <div class="container"> 
  

<div class="content">
  <h1 class="title-center">用户登录</h1>
  <form action="" method="POST" onsubmit="return checkLogin()">
    <div class="form-group">
      <label>用户名</label>
      <input type="text" name="username" class="form-control" value=>
    </div>
    <div class="form-group">
      <label>密码</label>
      <input type="password" name="password" class="form-control" value="">
    </div>
    <button type="submit" class="btn btn-primary">登录</button>
  </form>
</div>

<script>
  function checkLogin(){
      var username = $("input[name='username']").val()
      var password = $("input[name='password']").val()
      // 检测用户名长度
      if ( username.length < 2  || username.length > 25){
        alert('用户名长度在2-25个字符之间')
        return false;
      }
      // 检测密码长度
      if ( username.length < 2  || username.length > 25){
        alert('密码长度在6-20个字符之间')
        return false;
      }
  }
</script>


    </div>

页脚

<!-- Footer -->
<footer class="page-footer font-small blue" style="margin-top: 50px">
    <!-- Copyright -->
    <div class="footer-copyright text-center py-3">
        Copyright ©2007-2019 <a href="http://www.mingrisoft.com">明日科技有限公司</a>
        All Rights Reserved 吉ICP备10002740号-2 吉公网安备22010202000132
    </div>
    <!-- Copyright -->
  </footer>
  <!-- Footer -->

源代码

<!DOCTYPE html>
<html>
  <head>
    <meta charset="utf-8">
    <title>读书笔记</title>
    <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css">
    <link rel="stylesheet" href="/static/css/style.css">
    <script src="https://cdn.bootcss.com/jquery/2.2.4/jquery.js"></script>
    <script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/js/bootstrap.min.js"></script>
  </head>
  <body>
    <nav class="navbar navbar-default">
    <div class="container">
      <div class="navbar-header">
        <button type="button" class="navbar-toggle collapsed" data-toggle="collapse" data-target="#navbar" aria-expanded="false" aria-controls="navbar">
          <span class="sr-only">Toggle navigation</span>
          <span class="icon-bar"></span>
          <span class="icon-bar"></span>
          <span class="icon-bar"></span>
        </button>
        <a class="navbar-brand" href="/">学习笔记</a>
      </div>
      <div id="navbar" class="collapse navbar-collapse">
        <ul class="nav navbar-nav">
          <li><a href="/">主页</a></li>
          <li><a href="/articles">笔记</a></li>
          <li><a href="/about">关于</a></li>
        </ul>
        <ul class="nav navbar-nav navbar-right">
          
            <li><a href="/register">注册</a></li>
            <li><a href="/login">登录</a></li>
          
        </ul>
      </div><!--/.nav-collapse -->
    </div>
  </nav>
    <div class="container">
      
  





      
<div class="content">
  <h1 class="title-center">用户登录</h1>
  <form action="" method="POST" onsubmit="return checkLogin()">
    <div class="form-group">
      <label>用户名</label>
      <input type="text" name="username" class="form-control" value=>
    </div>
    <div class="form-group">
      <label>密码</label>
      <input type="password" name="password" class="form-control" value="">
    </div>
    <button type="submit" class="btn btn-primary">登录</button>
  </form>
</div>

<script>
  function checkLogin(){
      var username = $("input[name='username']").val()
      var password = $("input[name='password']").val()
      // 检测用户名长度
      if ( username.length < 2  || username.length > 25){
        alert('用户名长度在2-25个字符之间')
        return false;
      }
      // 检测密码长度
      if ( username.length < 2  || username.length > 25){
        alert('密码长度在6-20个字符之间')
        return false;
      }
  }
</script>


    </div>
    <!-- Footer -->
<footer class="page-footer font-small blue" style="margin-top: 50px">
    <!-- Copyright -->
    <div class="footer-copyright text-center py-3">
        Copyright ©2007-2019 <a href="http://www.mingrisoft.com">明日科技有限公司</a>
        All Rights Reserved 吉ICP备10002740号-2 吉公网安备22010202000132
    </div>
    <!-- Copyright -->
  </footer>
  <!-- Footer -->
  </body>
</html>
取自“http://www.openbrains.net/mediawiki/index.php?title=Python_Flask:_用户登录网页设计&oldid=32197”