nodejs基础学习

一：复制官网的代码，建立一个简单的服务器

const http = require('http');

const hostname = '127.0.0.1';
const port = 3000;

const server = http.createServer((req, res) => {
  res.statusCode = 200; //返回的状态码
  res.setHeader('Content-Type', 'text/plain');  //返回类型为纯文本
  res.end('Hello World\n');
});

server.listen(port, hostname, () => {
  console.log(`Server running at http://${hostname}:${port}/`);
});

二：了解nodejs的模块

 

三：创建一个简单的校园模块:

1:添加学生的模块: students.js

function add(name) {
	console.log('add student'+ name)
}

exports.add = add

2:添加老师的模块: teacher.js

function add(name) {
	console.log('add teacher'+ name)
}

exports.add = add

3:添加班级的模块: klass.js

// 使用模块之前需要require
var student = require('./student')  //将模块对象赋值给局部变量
var teacher = require('./teacher')

function add(teacherName, students) {
	teacher.add(teacherName)
	students.forEach(function (item, index) {
		student.add(item)
	})
}

exports.add = add

4:添加学校的模块: index.js

var klass = require('./klass')

exports.add = function (klasses) {
	forEach(function (item, index) {
		var _klass = item
		var teacherName = item.teacherName
		var students = item.students
		klass.add(teacherName, students)
	})
}