Hackforge Academy

Explanation

An array is a collection of multiple values stored in a single variable. Each value is accessed using its index.

Code:

const fruits = ['Apple', 'Banana', 'Orange'];
console.log(fruits[0]);

Explanation

The push() and pop() methods add and remove elements from the end of an array.

Code:

let numbers = [10, 20];
numbers.push(30);
numbers.pop();

Explanation

The shift() and unshift() methods remove and add elements at the beginning of an array.

Code:

let colors = ['Red', 'Blue'];
colors.unshift('Green');
colors.shift();

Explanation

The map() method creates a new array by transforming each element.

Code:

const nums = [1,2,3];
const doubled = nums.map(n => n * 2);

Explanation

The filter() method returns elements that satisfy a given condition.

Code:

const ages = [12,18,25];
const adults = ages.filter(age => age >= 18);