Arrays in Java Script!

We have learned that a variable can hold only one value, for example var i="value", we can assign only one literal value to i. We cannot assign multiple literal values to a variable i. To overcome this problem, JavaScript provides an array.

◾An array is a special type of variable, which can store multiple values using special syntax. Every value is associated with numeric index starting with 0.

◾Array Initialization

An array in JavaScript can be defined and initialized in two ways, array literal and Array constructor syntax.

◽Array Literal

Array literal syntax is simple. It takes a list of values separated by a comma and enclosed in square brackets.

const superheroes = ['iron man','spiderman','dhillon']

console.log(superheroes);

//get value from specific position

console.log(superheroes[0]);

console.log(superheroes[1]);

console.log(superheroes[2]);

◽Array Constructor

You can initialize an array with Array constructor syntax using new keyword.

//declare array with new keyword

var superheroes = new Array();

superheroes[0] = "iron man";

superheroes[1] = "spiderman";

superheroes[2] = "thor";

console.log(superheroes); //assigning value to array index