Nodejs Basic Learning

One: Copy the Code of the official website, build a simple server

Const HTTP = require (' http '); const hostname = ' 127.0.0.1 '; const PORT = 3000;const Server = Http.createserver ((req, res) =& Gt {  Res.statuscode = 200;//Return Status Code  res.setheader (' Content-type ', ' text/plain ');  The return type is plain text  res.end (' Hello world\n ');}); Server.listen (port, hostname, () = {  Console.log (' Server running at http://${hostname}:${port}/');});

II: Understand the Nodejs module

Three: Create a simple Campus module:

1: Add student's module: students.js

function Add (name) {Console.log (' Add student ' + name)}exports.add = add

2: Add Teacher's module: teacher.js

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

3: Add module of class: Klass.js

The module needs to be requirevar student = require ('./student ')  //To assign the module object to the local variable var teacher = require ('./teacher ') function Add ( TeacherName, students) {Teacher.add (teachername) Students.foreach (function (item, index) {Student.add (item)})} Exports.add = Add

4: Add a school module: index.js

var Klass = require ('./klass ') Exports.add = function (klasses) {ForEach (function (item, index) {var _klass = Itemvar Teach Ername = Item.teachernamevar students = Item.studentsklass.add (TeacherName, Students)})}

　　

Nodejs Basic Learning