加载静态文件,父模板的继承和扩展

Posted 2020-10-13 李笑晴

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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
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。

<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>{%block title %}{% endblock %}导航</title>
    <link rel="stylesheet" type="text/css" href="{{url_for(\'static\',filename=\'css/daohang.css\')}}">
</head>
<body bgcolor="#00ffff">
<ul>
    <li><a class="active" >首页</a></li>
    <li><a >新闻</a></li>
    <li><a >图库</a></li>
    <li><a >关于</a></li>
    <input class="eat" type="text" name="sousuo" value="请输入内容">
    <input class="eat"type="button" name="submit" value="搜索">
    <li><a href="http://127.0.0.1:5000/login/">登录</a></li>
    <li><a href="http://127.0.0.1:5000/zhu/">注册</a></li>
</ul>
{% block main %}{% endblock %}

</body>
</html>

ul {
    list-style-type: none;
    margin: 0;
    padding: 0;
    overflow: hidden;
    background-color: #333;
}

li {
    float: left;
}
li a {
    display: block;
    color: white;
    text-align: center;
    padding: 14px 16px;
    text-decoration: none;
}
li a:hover:not(.active) {
    background-color: #111;
}
.active {
    background-color: #4CAF50;
}
.eat{
    margin-top:0.4cm;
}
.tea{
    border:2px solid #a1a1a1;
    padding:10px 500px;
    background:hotpink;
    width:300px;
    border-radius:25px;
}
#rcorners6 {

    background: #8AC007;
    padding: 5px;
    width: 1300px;
    height: 50px;
}

{% extends\'daohang.html\' %}
{% block title %}
<h1>登录</h1>
{% endblock %}
{% block main %}
    <head>
 <link rel="stylesheet" type="text/css" href="{{ url_for(\'static\',filename=\'css/denglu.css\') }}">
    <script src="../static/js/muban.js"></script>
</head>
<body>
<div class="one"> <h2>登录</h2>

       <div class="input_box"  >
           <input id="uname" type="text" placeholder="请输入用户名">
       </div>
       <div class="input_box">
           <input id="upass" type="password" placeholder="请输入密码">
       </div>
       <div id="error_box"><br></div>
   <div class="input_box">
       <button onclick="myLogin()">登录</button>
   </div>
   </div>
  </div></div>
</body>
{% endblock %}

.one{
    border-style:dotted solid;
    border-color:royalblue;
    border-width:5px;
     margin: 0 auto;
    text-align: center;
    background-color:palevioletred;
     width: 300px;
}
h2{
    color:black;
    text-align:center;
}

.input_box{
    width: 300px;
    height: 30px;
    border-bottom-width: 2px;
    line-height: 30px;
    font-weight: bold;

}
.input_box{
    font-size: 8px;
    font-weight: bold;
    border-color: blanchedalmond;
}
.error_box{
     width: 80px;
    height: 30px;
    border-bottom-width: 2px;
    line-height: 30px;
    font-weight: bold;
    background-color:palevioletred;
}

{% extends\'daohang.html\' %}
{% block title %}
<h1>注册页面</h1>
{% endblock %}
{% block main %}
    <head>
  <link rel="stylesheet" type="text/css" href="{{url_for(\'static\',filename=\'css/zhuce.css\')}}">
 <script src="{{url_for(\'static\',filename=\'js/muban.js\')}}"></script>
</head>
<body>
 <div class="two">

      <h2>用户注册</h2>

       <div class="input_box"  >
           <input id="uname" type="text" placeholder="请输入用户名">
       </div>
       <div class="input_box">
           <input id="upass" type="password" placeholder="请输入密码">
       </div>
     <div class="input_box">
           <input id="upass" type="password" placeholder="请再次确认密码">
       </div>
       <div id="error_box"><br></div>
   <div class="input_box">
       <button onclick="myLogin()">注册</button>
   </div>
   </div>
  </div>
</div>
</body>
{% endblock %}

.two{
    border-style:dotted solid;
    border-color:royalblue;
    border-width:5px;
     margin: 0 auto;
    text-align: center;
    background-color:palevioletred;
     width: 300px;
}
h2{
    color:black;
    text-align:center;
}

.input_box{
    width: 300px;
    height: 30px;
    border-bottom-width: 2px;
    line-height: 30px;
    font-weight: bold;

}
.input_box{
    font-size: 8px;
    font-weight: bold;
    border-color: blanchedalmond;
}
.error_box{
     width: 80px;
    height: 30px;
    border-bottom-width: 2px;
    line-height: 30px;
    font-weight: bold;
    background-color:palevioletred;
}

function fnlogin() {
            var oUname = document.getElementById("uname");
            var oUpass = document.getElementById("upass");
            var oPas=document.getElementById("upas")
            var oError = document.getElementById("error_box");
            oError.innerHTML = "<br>"
            if (oUname.value.length < 6 || oUname.value.length > 12) {
                oError.innerHTML = "name:6-20";
                return;
            }
            else if(oUname.charCodeAt(0)>=48&&oUname.charCodeAt(0)<=57){
                oError.innerHTML="first number.";
                return;
            }else for(var i=0;i<oUname.value.length;i++){
                if((oUname.value.charCodeAt(i)<48||oUname.value.charCodeAt(i)>57)&&(oUname.value.charCodeAt(i)<97||oUname.value.charCodeAt(i)>122)){
                    oError.innerHTML="only letter or number."
                }
            }
             if(oPas.value!=oPass.value){
                oError.innerHTML=\'密码输入不正确\'
            }

            if (oUpass.value.length < 6 || oUpass.value.length >20) {
                oError.innerHTML = "password:6-20";
                return;
            }
            window.alert("登录成功！")
        }

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