- js文件： onclick函数return True时才提交表单，return False时不提交表单。
function fnLogin() {
var oUname = document.getElementById("name");
var oError = document.getElementById("error_box");
var oUpass = document.getElementById("password");
var oCheckpass = document.getElementById("password2");
var isError =true;
if(oUname.value.length<6||oUname.value.length>20){
oError.innerHTML="用户名长度为6到12位";
return false;
}else if(oUname.value.charCodeAt(0)>=48&&oUname.value.charCodeAt(0)<=57){
oError.innerHTML="用户名不能以数字开头";
return false;
}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="用户名只能包含数字，小写字母";
return false;
}
}
if(oUpass.value.length<6||oUpass.value.length>20){
oError.innerHTML="密码长度为6-20位";
return false;
}
if(oCheckpass.value!=oUpass.value) {
oError.innerHTML = "密码不一致,重新输入你的密码";
return false;
}
window.alert("注册成功");
return true;
} - html文件：
- <form>中设置 action和method="post"
- <input> 中设置 name
{% extends'base.html' %}
{% block title %}
注册
{% endblock %}
{% block head %}
<link href="../static/css/hh.css" rel="stylesheet" type="text/css">
<script src="../static/js/zc.js"></script>
{% endblock %}
{% block main %}
<body><br><br><br>
<div><h1>武林|注册</h1></div>
<div class="box">
<form action="{{ url_for('regist') }}" method="post" >
<div class="input_box">
请输入账号：<input id="name" name="username"type="text"placeholder="请输入用户名"><br>
</div>
<br>
<div class="input_box">
请输入密码：<input id="password" name="password"type="password"placeholder="请输入密码"><br><br>
请确认密码：<input id="password2" name="password2"type="password"placeholder="请再次输入密码"><br>
</div>
<br>
<div id="error_box"><br></div>
<div class="input_box">
<button onclick="fnLogin()">注册</button>
</div>
<br></form>
</div>
</div>
</body>
{% endblock %}
</html>
- 主py文件中：
- from flask import request, redirect, url_for
- @app.route('/regist/', methods=['GET', 'POST’])
def regist():
if request.method == 'GET':
return render_template('regist.html')
else:
username = request.form.get(‘username’)#获取form中的数据
判断用户名是否存在:存在报错
不存在，存到数据库中
redirect重定向到登录页
from flask import Flask, render_template,url_for,redirect,request
from flask_sqlalchemy import SQLAlchemy
import config
app = Flask(__name__)
app.config.from_object(config)
db = SQLAlchemy(app)
class User(db.Model):
__tablename__ = 'user'
id = db.Column(db.Integer, primary_key=True, autoincrement=True)
username = db.Column(db.String(20), nullable=False)
password = db.Column(db.String(20), nullable=False)
nickname = db.Column(db.String(20))
# db.create_all()
'''
user=User(username='hehe',password='1234567')
db.session.add(user)
db.session.commit()
'''
@app.route('/')
def hh():
return render_template('hh.html')
@app.route('/login/')
def login():
return render_template("dl.html")
@app.route('/regist/',methods=['GET','POST'])
def regist():
if request.method=='GET':
return render_template("zc.html")
else:
username = request.form.get("username")
password = request.form.get("password")
user = User.query.filter(User.username == username).first()
if user:
return ' 用户名已存在'
else:
user = User(username=username, password=password)
db.session.add(user)#数据库，添加操作
db.session.commit()
return redirect(url_for('login'))
@app.route('/wenda/')
def wenda():
return render_template("wenda.html")
if __name__ == '__main__':
app.run(debug=True)
