let express = require('express');
let consolidate = require('consolidate');
let bodyParser = require('body-parser');
let cookieSession = require('cookie-session');
let db = require('./db');
let app = express();
app.use(express.static(__dirname+'/views'));
app.use(bodyParser.urlencoded({
extended:true
}));
app.use(bodyParser.json());
app.set('views',__dirname+'/template');
app.set('view engine','html');
app.engine('html',consolidate.ejs);
app.post('/login',(req,res)=>{
//全部用户 遍历用户数组
//判断当前进入的用户是否存在于这个 表中
if(!db.list.length){
db.add(req.body);
res.redirect('./');
// res.end('haha');
}else{
let flag = mapData();
if(flag){
let len = db.list.length;
let sj = db.list;
res.render('OA',{ len:len,sj:sj });//跳转OA页面并渲染OA页面
}else{
res.redirect('./') //未登录
}
function mapData(){
for(let i = 0;i< db.list.length;i++){
let uObj = db.list[i];
//登录
if(uObj.username === req.body.username && uObj.password === req.body.password&&uObj.yearold === req.body.yearold && uObj.like === req.body.like){
return true;
}
}
//注册
db.add(req.body);
return false;
}
}
});
app.listen(3000,()=>{
console.log('start');
});
server.js 服务器
db.js 数据的增删改查
let date = require('./db.json');
let fs = require('fs');
module.exports = {
//写数据
story(){
fs.writeFileSync(__dirname+'/db.json',JSON.stringify(date));
},
add(user){
date.push(user);
this.story();
},
del(index){
date[index].isShow = false;
this.story();
},
update(index,nDate){
date[index] = nDate;
this.story();
},
get list(){
let arr =[];
for(let i = 0; i< date.length;i++){
if(date[i].isShow==='true'){
arr.push(date[i]);
}
};
return arr;
}
}
数据格式 db.json
[{"username":"xiaobai","password":"111","yearold":"18","like":"象棋","isShow":"true"}
OA.html
<!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>OA管理系统</title>
<style>
body,html{
width: 100%;
height: 100%;
}
*{
margin: 0;
padding: 0;
box-sizing: border-box;
}
nav{
width: 100%;
height: 100px;
background: #438eb9;
}
h1{
color: white;
padding: 30px 25px;
float: left;
}
.fl{
float: right;
width: 150px;
height: 100%;
}
a{
text-decoration: none;
color: white;
font-size: 18px;
float: left;
margin-top: 35px;
}
.fl span{
float: right;
margin-top: 35px;
margin-right: 20px;
color: white;
font-size: 18px;
}
.main{
width: 100%;
height: 100%;
display: flex;
flex-direction: row;
}
.main-content{
flex: 1;
}
.main-nav{
width: 200px;
height: 100%;
border: 1px solid gray;
}
table{
width: 100%;
height: 100%;
border: 1px solid gray;
text-align: center;
table-layout:fixed;
}
tr,td{
border: 1px solid gray;
height: 30px;
}
table tr{
height: 30px;
}
</style>
</head>
<body>
<nav>
<h1>OA</h1>
<div class="fl">
<a href="#">Login</a>
<span>Edit</span>
</div>
</nav>
<div class="main">
<div class="main-nav">
<ul>
<% for(let i = 1;i<= len;i++){%>
<li><%=i%></li>
<%}%>
</ul>
</div>
<div class="main-content">
<table>
<thead>
<td>姓名</td>
<td>年龄</td>
<td>爱好</td>
</thead>
<tbody>
<% for(let i = 0;i< len;i++){%>
<tr>
<td><%= sj[i].username %></td>
<td><%= sj[i].yearold %></td>
<td><%= sj[i].like %></td>
</tr>
<%}%>
</tbody>
</table>
</div>
</div>
</body>
<script>
</script>
</html>
index.html
<!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>
<style>
html,body{
height: 100%;
width: 100%;
}
input,p,form,button,h3{
margin: 0;
padding: 0;
}
input{
width: 150px;
height: 30px;
outline:none;
margin: 20px 0;
}
form{
width: 500px;
height: 400px;
border: 1px solid gray;
text-align: center;
background: gray;
margin: 0 auto;
}
button{
border: none;
width: 200px;
height: 30px;
background: yellowgreen;
margin: 3px 0;
}
h3{
color:navy;
}
</style>
</head>
<body>
<form action="./login" method="POST" enctype="application/x-www-form-urlencoded">
<h3>登录页</h3>
<p>
用户名：<input type="text" name="username" id="">
</p>
<p>
密 码：<input type="password" name="password">
</p>
<p>
年 龄：<input type="text" name="yearold" onkeyup='this.value=this.value.replace(/[^0-9$]/g,"")'>
</p>
<p>
爱 好：<input type="text" name="like">
</p>
<p>
<input type="text" name="isShow" hidden="hidden" value="true">
</p>
<button>点击提交</button>
</form>
</body>
</html>
能码的尽量不写字，这就是码农吧 。使用node 做一个最基础的OA系统。