JavaScript Concepts

ES6 Features

Modern JavaScript (ES6) introduces several helpful features:

Destructuring: Unpack values from arrays or properties from objects.
Spread and Rest: Spread allows an array or object to be expanded. Rest collects all remaining elements.
Template Literals: Allows embedded expressions in strings using backticks.
Default Parameters: Provides default values for function parameters.

Examples:


// Destructuring
const [a, b] = [1, 2];
const {name, age} = {name: "Alice", age: 25};

// Spread and Rest
let arr1 = [1, 2];
let arr2 = [...arr1, 3, 4];
function add(...numbers) { return numbers.reduce((a, b) => a + b); }

// Template Literals
let message = \`Hello, \${name}!\`;

// Default Parameters
function greet(name = "Guest") {
    console.log(\`Hello, \${name}!\`);
}