标签：== error on() input dea deb ssi 数据 styles
function myLogin() { var oUname = document.getElementById("uname"); var oUpass = document.getElementById("upass"); var oAgain = document.getElementById("again"); var oError = document.getElementById("error_box"); var isError = true; oError.innerHTML = "<br>"; // 验证用户名 if (user.value.length < 6 || user.value.length > 20) { oError.innerHTML = "用户名6-20位"; isError = false; return isError; } else if ((user.value.charCodeAt(0) >= 48) && (user.value.charCodeAt(0) <= 57)) { oError.innerHTML = "用户名首字母不能是数字"; isError = false; return isError; } else for (var i = 0; i < user.value.length; i++) { if ((user.value.charCodeAt(i) < 48) || (user.value.charCodeAt(i) > 57) && (user.value.charCodeAt(i) < 97) || (user.value.charCodeAt(i) > 122)) { oError.innerHTML = "用户名只能是数字或字母"; isError = false; return isError; } } // 验证密码 if (upass.value.length < 6 || pass.value.length > 20) { oError.innerHTML = "密码6-20位"; isError = false; return isError; } // 验证再次输入的密码 if (upass.value != zhuce.value) { oError.innerHTML = "密码不一致"; isError = false; return isError; } return ture; // 验证弹框 window.alert("注册成功！") }
html文件：
{% extends‘base.html‘ %}
{% block title %}
register
{% endblock %}
{% block head %}
<link rel="stylesheet" type="text/css" href="../static/css/1.css">
<script src="../static/js/zhuce.js"></script>
<script src="{{ url_for(‘static‘,filename=‘js/zhuce.js‘) }}"></script>
{% endblock %}
{% block main %}
<body>
<div class="box">
<h1>注册</h1>
<form action="{{ url_for(‘register‘) }}" method="post">
<div class="input_box">
Username：<input id="uname"type="text" name="username"placeholder="请输入用户名">
</div>
<br>
<div class="input_box">
Password：<input id="upass"type="password" name="password"placeholder="请输入登录密码">
</div>
<br>
<div class="input_box">
密码确认：<input id="again" type="password" placeholder="请再次输入密码">
</div><br>
<div id="error_box"><br></div>
<div class="input_box">
<button onclick="myLogin()">点击注册</button>
<button type="button" onclick=window.alert("是否取消注册！")>取消</button>
</div>
</form>
</div>
</body> {% endblock %}
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,request,redirect,url_for 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) #db.create_all() #user=User(username=‘yyyy1‘,password=‘111111‘) #db.session.add(user) #db.session.commit() #user = User.query.filter(User.username == ‘yyyy1‘).first() #user=User.query.filter(User.username==‘yyyy1‘).first() #user.password=‘234567‘ #print(user.username,user.password) #db.session.commit() #user=User.query.filter(User.username == ‘yyyy1‘).first() #db.session.delete(user) #db.session.commit() # @app.route(‘/‘) def base(): return render_template(‘base.html‘) @app.route(‘/login/‘) def login(): return render_template(‘login.html‘) @app.route(‘/register/‘, methods=[‘GET‘,‘POST‘]) def register(): if request.method==‘GET‘: return render_template(‘register.html‘) else: usern=request.form.get(‘username‘) passw= request.form.get(‘password‘) user=User.query.filter(User.username==usern).first() if user: return ‘username existed‘ else: user=User(username=usern,password=passw) db.session.add(user) db.session.commit() return redirect(url_for(‘login‘)) @app.route(‘/question/‘) def question(): return render_template(‘question.html‘) if __name__ == ‘__main__‘: app.run(debug=True)
标签：== error on() input dea deb ssi 数据 styles
原文地址：http://www.cnblogs.com/222ya/p/7874491.html
