加载静态文件,父模板的继承和扩展

用url_for加载静态文件
1. <script src="{{ url_for('static',filename='js/login.js') }}"></script>
2. flask 从static文件夹开始寻找
3. 可用于加载css, js, image文件
继承和扩展首页、登录页、注册页都按上述步骤改写。
1. 把一些公共的代码放在父模板中，避免每个模板写同样的内容。base.html
2. 子模板继承父模板
  1. {% extends 'base.html’ %}
3. 父模板提前定义好子模板可以实现一些自己需求的位置及名称。block
  1. <title>{% block title %}{% endblock %}-MIS问答平台</title>
  2. {% block head %}{% endblock %}
  3. {% block main %}{% endblock %}
4. 子模板中写代码实现自己的需求。block
  1. {% block title %}登录{% endblock %}
首页、登录页、注册页都按上述步骤改写。

 1 <head>
 2     <meta charset="UTF-8">
 3     <title>{% block title %}{% endblock %}-MIS问答网站</title>
 4      <!--引入CSS文件-->
 5     <link rel="stylesheet" href="{{url_for('static',filename='css/second.css')}}">
 6     <link rel="stylesheet" href="{{url_for('static',filename='layui/css/layui.css')}}" media="all">
 7     <!--link rel="stylesheet" href="{{url_for('static',filename='bootstrap/css/bootstrap.min.css')}}"-->
 8     <!--引入js文件-->
 9     <script src="{{url_for('static',filename='js/public.js')}}"></script>
10     <script src="{{url_for('static',filename='layui/layui.js')}}" charset="utf-8"></script>
11     <script src="{{url_for('static',filename='js/jquery.js')}}" charset="utf-8"></script>
12     <!--script src="{{url_for('static',filename='bootstrap/js/bootstrap.min.js')}}"></script-->
13     {% block link %}{% endblock %}
14 </head>

 1 <!DOCTYPE html>
 2 <html lang="en">
 3 <head>
 4     <meta charset="UTF-8">
 5     <title>{% block title %}{% endblock %}-MIS问答网站</title>
 6      <!--引入CSS文件-->
 7     <link rel="stylesheet" href="{{url_for('static',filename='css/second.css')}}">
 8     <link rel="stylesheet" href="{{url_for('static',filename='layui/css/layui.css')}}" media="all">
 9     <!--link rel="stylesheet" href="{{url_for('static',filename='bootstrap/css/bootstrap.min.css')}}"-->
10     <!--引入js文件-->
11     <script src="{{url_for('static',filename='js/public.js')}}"></script>
12     <script src="{{url_for('static',filename='layui/layui.js')}}" charset="utf-8"></script>
13     <script src="{{url_for('static',filename='js/jquery.js')}}" charset="utf-8"></script>
14     <!--script src="{{url_for('static',filename='bootstrap/js/bootstrap.min.js')}}"></script-->
15     {% block link %}{% endblock %}
16 </head>
17 <body class="box" id="body">
18 <nav>
19     <div class="layui-row" style="padding-top:5px;">
20         <div class="layui-col-md8">
21             <div class="layui-row">
22                 <div class="layui-col-md1">　</div>
23                 <div class="layui-col-md11">
24                     <div class="layui-row">
25                         <div class="layui-col-md1">
26                             <a href="{{ url_for('index') }}"><div class="layui-nav-img"><img src="{{url_for('static',filename='img/logo.png" alt="logo" width="50px"></div></a>
27                         </div>
28                         <div class="layui-col-md11" style="padding-top:3px;">
29                             <form method="get" action="#">
30                                 <div class="layui-row">
31                                     <div class="layui-col-md3" style="padding-left: 10px;">
32                                         <input type="text" name="title" required lay-verify="required"
33                                                placeholder="请输入搜索内容"
34                                                autocomplete="off" class="layui-input">
35                                     </div>
36                                     <div class="layui-col-md3" style="padding-left: 10px;">
37                                         <button type="submit" class="layui-btn layui-btn-primary">搜索</button>
38                                     </div>
39                                 </div>
40                             </form>
41                         </div>
42                     </div>
43                 </div>
44             </div>
45         </div>
46         <div class="layui-col-md4">
47             <div class="layui-row">
48                 <div class="layui-col-md4" style="padding-top: 5px;padding-left: 30px;">
49                     <a class="layui-btn layui-btn-small layui-btn-radius layui-btn-primary" href="{{ url_for('login') }}">登录</a>
50                 </div>
51                 <div class="layui-col-md4">
52                     <a class="layui-btn layui-btn-radius layui-btn-danger" href="{{ url_for('regist') }}">注册</a>
53                 </div>
54                 <div class="layui-col-md4">
55                     <button class="layui-btn layui-btn-radius layui-btn-warm" onclick="light()" type="button"
56                             id="light">关灯
57                     </button>
58                 </div>
59             </div>
60         </div>
61     </div>
62 </nav>
63 <div class="box">
64    {% block box %}{% endblock  %}
65 </div>
66 <footer>
67     <div class="footer_box">
68         Copyright@ 2017-2022 个人版权，版权所有　　作者：叶在林　　电话0000-00000000　　手机00000000000
69     </div>
70 </footer>
71 </body>
72 </html>

{% extends 'index.html' %}
{% block title %}
    注册
{% endblock %}

{% block link %}

{% endblock %}

{% block box %}
    <div class="regis_box regis_box_on" id="box">
        <!--css-->
        <div class="">
            <!--头部提示-->
            <div class="font_title">
                注册新用户
                <hr class="">
            </div>
            <!--表单-->
            <form class="layui-form" role="form" id="form_regis" method="post" action=" #" name="form_regis"
                  onSubmit="return registration()">
                <!--每一行-->
                <div class="layui-form-item">
                    <label class="layui-form-label">登录帐号</label>
                    <div class="layui-input-block">
                        <input type="text" name="user_name" autocomplete="off" placeholder="登录用户名，不少于6个字符"
                               class="layui-input">
                    </div>
                </div>

                <div class="layui-form-item">
                    <label class="layui-form-label">显示名称</label>
                    <div class="layui-input-block">
                        <input type="text" name="user_title" autocomplete="off" placeholder="显示名称" 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="user_password" placeholder="密码6到20位，只能包含字母、数字" autocomplete="off"
                               class="layui-input">
                    </div>
                </div>

                <div class="layui-form-item">
                    <label class="layui-form-label">确认密码</label>
                    <div class="layui-input-block">
                        <input type="password" name="check_password" placeholder="请输入确认密码" autocomplete="off"
                               class="layui-input">
                    </div>
                </div>
                <div id="error_box" style="color: red;">
                    <br>
                </div>
                <!--注册按钮-->
                <div class="btn_submit_regis">
                    <button type="submit" class="layui-btn layui-btn-normal">注册</button>
                </div>
                <!--协议提示-->
            </form>
        </div>
    </div>
{% endblock %}

运行结果：