JavaScript Snippets

Useful JavaScript code snippets for common programming tasks

Array Map

javascript

Transform array elements using map function

const numbers = [1, 2, 3, 4];
const doubled = numbers.map(num => num * 2);

String Template

javascript

Use template literals for string interpolation

const name = 'World';
const greeting = `Hello, ${name}!`;

Array Methods

javascript

Common array methods in JavaScript

const numbers = [1, 2, 3, 4, 5];

// Filter even numbers
const evens = numbers.filter(n => n % 2 === 0);

// Reduce to sum
const sum = numbers.reduce((acc, curr) => acc + curr, 0);

// Find first number > 3
const found = numbers.find(n => n > 3);

Async/Await

javascript

Handle asynchronous operations

async function fetchUserData() {
  try {
    const response = await fetch('https://api.example.com/user');
    const data = await response.json();
    return data;
  } catch (error) {
    console.error('Error:', error);
  }
}