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Introduction to array

Lets learn what is array in javascript

In JavaScript, an array is a data structure used to store multiple values in a single variable. Arrays are zero-indexed, meaning the first element is at index 0, the second element at index 1, and so on. Arrays can hold values of different types, including numbers, strings, objects, and other arrays.

let fruits = ["Apple", "Banana", "Cherry"];
console.log(fruits[0]); // Output: Apple

let mixedArray = [1, "two", { three: 3 }, [4, 5]];
console.log(mixedArray[2]); // Output: { three: 3 }
console.log(mixedArray[3][1]); // Output: 5

How to create a array​

1. Using Array Literals​

let fruits = ["Apple", "Banana", "Cherry"];

2. Using the Array Constructor​

let fruits = new Array("Apple", "Banana", "Cherry");

3. Using the Array.of Method​

let fruits = Array.of("Apple", "Banana", "Cherry");

4. Using the Array.from Method​

let str = "Hello";
let chars = Array.from(str); // ['H', 'e', 'l', 'l', 'o']

5. Creating an Empty Array​

let emptyArray = [];
let emptyArray = new Array();

6. Creating an Array with a Specific Length​

let arrayWithLength = new Array(3); // [undefined, undefined, undefined]

7. Using Spread Operator with an Existing Array​

let existingArray = [1, 2, 3];
let newArray = [...existingArray];

8. Creating an Array with a Fixed Number of Elements​

let fixedArray = Array(5).fill(0); // [0, 0, 0, 0, 0]