附上代码:
HTML部分(需要用到Jq)
<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8" /> <meta name="viewport" content="width=device-width, initial-scale=1.0" /> <meta http-equiv="X-UA-Compatible" content="ie=edge" /> <title>Document</title> <script src="./jquery.js"></script> <style> * { margin: 0; padding: 0; } div:nth-child(2) { display: none; } input { display: block; height: 40px; width: 200px; margin: 20px auto; } button:not(#email) { display: block; height: 30px; width: 70px; background: lightcoral; border: none; margin: 0 auto; } #email { display: block; height: 30px; width: 100px; margin: 0 auto; } ul { height: 50px; width: 200px; background: lightblue; margin: 0 auto; list-style: none; } li { height: 50px; width: 100px; float: left; text-align: center; line-height: 50px; } li:hover { background: lightgreen; cursor: pointer; } </style> </head> <body> <ul> <li id="regChange">注册</li> <li id="loginChange">登录</li> </ul> <div id="reg"> <input type="text" placeholder="邮箱" id="user" /> <input type="text" placeholder="密码" id="psd" /> <input type="text" placeholder="验证码" id="sendmail" /> <button id="email">发送验证码</button> <button id="btn">注册</button> </div> <div id="login"> <input type="text" placeholder="用户名" id="loguser" /> <input type="text" placeholder="密码" id="logpsd" /> <button id="logbtn">登录</button> </div> <script> //增加监听事件 btn.addEventListener("click", clickHandler); logbtn.addEventListener("click", clickHandler); email.addEventListener("click", sendHandler); regChange.addEventListener("click", changeHandler); loginChange.addEventListener("click", changeHandler); function clickHandler(e) { if (this.textContent === "注册") { //若为空时跳出 if (!user.value || !psd.value || !sendmail.value) { alert("Can't be empty"); return; } //点击注册时将邮箱号,密码,验证码传送至后台 $.get( `http://localhost:1024/index/reg?user=${user.value}&psd=${ psd.value }&mail=${sendmail.value}`, function(res) { //后台返回的对象,若hasUser为真,说明已有用户名,否则注册成功 if (res.hasUser) { alert("注册失败"); return; } else { alert("注册成功~"); } //成功后隐藏注册,显示登录 reg.style.display = "none"; login.style.display = "block"; } ); } else if (this.textContent === "登录") { // 同注册,不能为空 if (!loguser.value || !logpsd.value) { alert("Can't be empty"); return; } //点击登录时将邮箱号,密码传送至后台 $.get( `http://localhost:1024/index/login?user=${loguser.value}&psd=${ logpsd.value }`, function(res) { //后台返回的对象,若isUser为真,说明正确,并跳转至欢迎页,否则失败 if (res.isUser) { alert("登录成功"); location.href = "./welcome.html"; } else { alert("用户名或密码不正确"); return; } } ); } } function sendHandler(e) { // 点击获取验证码后将验证码发送到后端进行比对 $.get(`http://localhost:1024/index/sendmail?${user.value}`); } function changeHandler(e) { // 点击上方的注册登录切换 if (e.target.textContent === "注册") { reg.style.display = "block"; login.style.display = "none"; } else { reg.style.display = "none"; login.style.display = "block"; } } </script> </body> </html>
node后台部分: 需要引入的第三方模块有:express框架,cors,nodemailer,
const express = require('express');//引入express框架(需要先下载,官网有教程) const url = require('url'); const path = require('path'); const fs = require('fs'); const cors = require('cors');//引入cors模块(解决跨域问题) const app = express(); // const bodyparser = require('body-parser'); const sendMail = require('./send');//这个模块是发送邮件模块(在我第三篇node文章里有) app.use(cors()); // 下面的类似于http请求的头文件(另一篇文章有写到http请求,也是注册登录) app.all("*", function (req, res, next) { //设置允许跨域的域名,*代表允许任意域名跨域 res.header("Access-Control-Allow-Origin", "*"); res.header("Access-Control-Allow-Headers", "content-type");//允许的header类型 res.header("Access-Control-Allow-Methods", "DELETE,PUT,POST,GET,OPTIONS");//跨域允许的请求方式 next();//是否继续向下执行 }) //注册接口 var count = '';//新建一个空字符存放验证码,可供全局调用 app.get('/index/reg', (req, res) => { let search = url.parse(req.url).search;//保存前端传来的数据 files = path.join(__dirname, './user.txt');//用一个txt来记录用户名和密码 fs.readFile(files, 'utf8', (err, data) => { //读取txt文件,判断是否存在用户名,并对验证码进行判断 if (data.indexOf(search.split('&')[0]) === -1 && search.split('&')[2].split('=')[1] === count) { fs.appendFile(files, search.split('&')[0] + '&' + search.split('&')[1]);//符合条件就将信息存至TXT中,并返回一个对象至前端,表示验证成功(hasUser为真,说明该用户已存在) res.send({ hasUser: false }); } else { //不符合条件就返回一个对象至前端,表示验证失败 res.send({ hasUser: true }); } }); }); //登录接口 app.get('/index/login', (req, res) => { let search = url.parse(req.url).search;//保存前端传来的数据 files = path.join(__dirname, './user.txt'); //读取txt文件,判断是否存在用户名和对应的密码 fs.readFile(files, 'utf8', (err, data) => { //符合条件就返回一个对象至前端,表示验证失败(isUser为真,说明该用户名与密码不符) if (data.indexOf(search) === -1) { res.send({ isUser: false }); } else { res.send({ isUser: true }); } }); }); //邮箱验证接口 app.get('/index/sendmail', (req, res) => { count = '';//初始化验证码容器 let Email = url.parse(req.url).query;//获取前端传来的邮箱号 for (let i = 0; i < 4; i++) { count += Math.floor(Math.random() * 10);//生成4个随机数 } sendMail.send(Email, count);//调用邮件发送模块(传入注册的邮箱,验证码) res.send(count); }); //监听服务 app.listen(1024, () => { console.log('Server Start~'); });
附上发送邮件的模块(在我前面的文章中也有)
//引入模块 const nodemailer = require("nodemailer"); //新建对象 let obj = { transporter: nodemailer.createTransport({ service: "qq", // 运营商 qq邮箱 网易// port: 465, secure: true, auth: { user: "**********@qq.com", //发送方的邮箱 pass: "***************" // pop3 授权码 } }), //传参(对方的mail地址,内容) send: function(mail, content) { mailOptions = { //发送方的邮箱地址 from: '"Hello World~" <***********@qq.com>', to: mail, subject: content, text: content, html: "<h1>" + content + "</h1>" }; this.transporter.sendMail(mailOptions, (error, info) => { if (error) { return console.log(error); } console.log("Message sent: %s", info.messageId); }); } }; //抛出对象以接收 module.exports = obj;