Node.js asoslari: Server tomonida JavaScript

Node.js - bu Chrome V8 JavaScript engine asosida qurilgan server tomonida ishlaydigan JavaScript runtime muhiti.

Node.js afzalliklari

Node.js quyidagi afzalliklarga ega:

• Asinxron va event-driven arxitektura
• Non-blocking I/O
• Yuqori samaradorlik
• Katta ekotizim (npm)
• Bir xil til (JavaScript) front-end va back-end uchun

Node.js-ni o'rnatish

Node.js-ni o'rnatish uchun rasmiy saytdan yuklab olish mumkin: nodejs.org

Birinchi Node.js dasturi

Node.js-da oddiy HTTP server yaratish:

const http = require('http');

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

const port = 3000;
server.listen(port, () => {
  console.log(`Server ${port} portda ishga tushdi`);
});

Express.js bilan ishlash

Express.js - Node.js uchun eng mashhur web framework:

const express = require('express');
const app = express();
const port = 3000;

app.get('/', (req, res) => {
  res.send('Salom, Express!');
});

app.listen(port, () => {
  console.log(`Server ${port} portda ishga tushdi`);
});

Xulosa

Node.js zamonaviy web ilovalar yaratish uchun kuchli vosita. U JavaScript-ni server tomonida ishlatish imkonini beradi va yuqori samaradorlikka ega.