How to use shift and unshift method in javascript

How to use shift and unshift method in javascript

Date: 12/12/2019

Introduction:

In this article, we will explain how to use shift() and unshift() to add and remove the elements from the array in javascript.

shift() used to remove the first element of the array.

unshift() is used to add one or more elements to the array.

shift():

syntax:

arr.shift()

Example:

var arr = [100, 289, 760, 430, 290];
var value = arr.shift();

console.log(value);
console.log(arr);

Output:

• This function prints the removed element of the array

• If the array is empty it will return undefined

var arr = [];
var value = arr.shift();

console.log(value);
console.log(arr);

unshift() :

syntax:

arr. unshift(ele1,ele2………)

Example

var arr = [838,90,320,410];
console.log(arr.unshift(220,560));
console.log(arr);

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