node js server
const express = require('express')
const app = express()
const port = 3000
app.get('/', (req, res) => res.send('Hello World!'))
app.listen(port, () => console.log(`Example app listening at http://localhost:${port}`))node js server
const express = require('express')
const app = express()
const port = 3000
app.get('/', (req, res) => res.send('Hello World!'))
app.listen(port, () => console.log(`Example app listening at http://localhost:${port}`))node run command
// Run a command asynchronously
const { spawn } = require('child_process');
const dir = spawn('cmd', ['/c', 'dir']);
dir.stdout.on('data', data => console.log(`Stdout: ${data}`));
dir.stderr.on('data', data => console.log(`Stderr: ${data}`));
dir.on('close', code => console.log(`Exit code: ${code}`));
// Run a command synchronously
const { spawnSync } = require( 'child_process' );
const dir = spawnSync('cmd', ['/c', 'dir']);
console.log(`Stdout: ${dir.stdout.toString()}`);
console.log(`Stderr: ${dir.stderr.toString()}`);run node js
node name_app.jscreate node project
#1. server.js
var express = require('express');
var app = express();
app.get('/', function (req, res) {
res.status(200).send('Hello World!');
});
var port = process.env.PORT || 3000;
var server = app.listen(port, function() {
console.log('Express server listening on port ' + port);
});
open cmd run server.js
"node server.js"
log:Express server listening on port 3000
& then
open link "http://localhost:3000/" in your browser and show result.how to run a js file in node
Save your .js file in the same folder as node.js,
For windows , Usually location is- "C:\Program Files\nodejs"
Open 'Command prompt and locate node.js folder' OR directly open 'Node.js command prompt' and type
>> node (file_name).jsnode command
> node
Welcome to Node.js <version>.
>'type in javascript'Copyright © 2021 Codeinu
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