hello world in nodejs, http not defined-CodePudding

i tried to run a hello world command in nodejs, but something wrong have happened, could you help me?

http.createServer(function(req, res){
  res.writeHead(200, {'Content-Type': 'text/plain' });
  res.end('Hello World \n');
}).listen(8080, '127.0.0.1');

~ $ node server.js
/data/data/com.termux/files/home/server.js:1
http.createServer(function(req, res){
^

ReferenceError: http is not defined
    at Object.<anonymous> (/data/data/com.termux/files/home/server.js:1:1)
    at Module._compile (node:internal/modules/cjs/loader:1101:14)
    at Object.Module._extensions..js (node:internal/modules/cjs/loader:1153:10)
    at Module.load (node:internal/modules/cjs/loader:981:32)
    at Function.Module._load (node:internal/modules/cjs/loader:822:12)
    at Function.executeUserEntryPoint [as runMain] (node:internal/modules/run_main:79:12)
    at node:internal/main/run_main_module:17:47

CodePudding user response：

You have not created a variable called http. Also you have to create few more things before you call that http.createserver function

const http = require('http');

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

const server = http.createServer((req, res) => {
  res.statusCode = 200;
  res.setHeader('Content-Type', 'text/plain');
  res.end('Hello World');
});

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

This is the complete code you should use.

CodePudding user response：

Before having used the http module, you will have to import it first. Add the import statement before using it:

let http = require("http");

Please make sure you have this statement written!