JavaScript Array Methods

JavaScript Array Methods provide powerful built-in functions to perform operations on array. These methods simplifies the operations like – adding, removing, searching, sorting, filtering, and other operations.

Here is an example that demonstrates the basic array operations.

// Initial array of numbers
let arr = [10, 20, 30, 40, 50];

// 1. Adding numbers to the array
arr.push(60); // Add 60 at the end
arr.unshift(5); // Add 5 at the beginning
console.log("After Adding Elements:", arr);
// Output: After Adding Elements: [ 5, 10, 20, 30, 40, 50, 60 ]


// 2. Filtering numbers greater than 50
let nums = arr.filter(num => num <= 30);
console.log("Numbers Less Than or Equal to 50:", nums);
// Output: Numbers Less Than or Equal to 50: [ 5, 10, 20, 30 ]


// 3. Doubling the values
let doubledNums = arr.map(num => num * 2);
console.log("Doubled Values:", doubledNums);
// Output: Doubled Values: [ 10,  20,  40, 60, 80, 100, 120 ]


// 4. Sorting in Descending Order
let sortedNums = arr.sort((a, b) => b - a);
console.log("Sorted in Descending Order:", sortedNums);
// Output: Sorted in Descending Order: [ 60, 50, 40, 30, 20, 10,  5 ]

Below are the list of all JavaScript array methods with their brief description.