node. js Hello World and Function call

Hello World

var http = require (' http '); Request Agreement Http.createserver (function (request, response) {Response.writehead ($, {' Content-type ': ' text/html; charset= Utf-8 '}); Request header information, defined text type and character set if (request.url!== "/favicon.ico") {  //clears 2nd this access Console.log (' Access '); Response.Write (' Hello, World '); Response.End (' Hell, World ');//Do not write the end of the HTTP protocol, but write a two-time Access  }}). Listen (8000); Console.log (' Server running at Http://127.0.0.1:8000/');

　　

/*
Start the service
CMD under execution:
Node N1_hello.js
Browser access: http://localhost:8000
*/

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node. js Call function

1. Local functions

var  http  =  require (' http ');  Http.createserver (function  (request,  response)  {   response.writehead ($,  {' Content-type '):  ' text/html;  Charset=utf-8 '});     if (request.url!== "/favicon.ico") {        fun1 (response);//Call local function      Response.End (');  }}). Listen (8000);  Console.log (' Server  running  at  http://127.0.0.1:8000/');  function Fun1 (res) {Console.log ("fun1"); Res.write ("Hello, I am fun1");}

　　

2. Functions that call other JS files

Na_node.js

var  http  =  require (' http ');  var otherfun = require ("./model/otherfun.js");//Insert other JS file Http.createserver (function  (request,  response)  {   Response.writehead,  {' Content-type ':  ' text/html;  Charset=utf-8 '});     if (request.url!== "/favicon.ico") {    //otherfun (response);   OTHERFUN.FUN2 (response);//You can directly point to   the value//otherfun[' FUN3 '} (response);//You can also take a string value                //------- Call the corresponding function with a string---                funname  =  ' fun3 ';                Otherfun[funname] (response);               Response.End (");}). Listen (8000);  Console.log (' Server  running  at  http://127.0.0.1:8000/');                  

　　

Otherfun.js

Module.exports = {//supports multiple functions fun2:function (res) {Console.log ("I am fun2"); Res.write ("Hello, I am fun2");},fun3:function (res) { Console.log ("I am Fun3"); Res.write ("Hello, I am Fun3");}  } /*function fun2 (res) {Console.log ("fun2"); Res.write ("Hello, I am fun2");} Module.exports  =  fun2;    Only one function is supported  */

　　

node. js Hello World and Function call