An array is collection of items.An array can hold many values under a single name, and you can access the values by referring to an index number.

for example lets consider an array 'names'

let names = ['billu','maaru','mayank','mayur','tillu',];

Array Methods:

console.log(names);

//length

console.log(names.length);

//specific element

console.log(names[2]);

//last element

console.log(names[names.length-1]);

replacing an element

names[2] = 'shanaya';

console.log(names);

//inserting new value

names.push('ram');

console.log(names);

//accesing multiple values through slice

console.log(names.slice(1,4));

//splice

let fruit = ['apple','banana','orange','watermelon']; fruit.splice(2,2,'grapes','chiku');

console.log(fruit);

//concatenation

let arr1 = [1,2,3,4,5,7,8] let arr2 = [5,6,7,8] let arr3 = [9,10] console.log(arr1.concat(arr2,arr3));

//fill

console.log(arr1.fill('mayur',2,5));

//includes

console.log(arr1.includes(5,7));