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JavaScript Program to Count the Number of Keys/Properties in an Object

Last Updated: 21 September 2023

In this article, we will learn how to count the number of keys or properties in an object using JavaScript. Working with objects is a common task in JavaScript, and at tim ...read more

JavaScript Program to Find Duplicate Elements in an Array

Last Updated: 15 September 2023

In this article, we are going to understand how we can find elements in an array whose frequency is greater than one. Finding duplicate elements in an array means identify ...read more

JavaScript Program to Perform Simple Mathematical Calculation

Last Updated: 11 September 2023

In this article, we are going to learn how perform simple mathematical calculations by using JavaScript. In this, we will get the two numbers and one operator as input and ...read more

JavaScript Program for Sum of Digits of a Number

Last Updated: 04 September 2023

In this article, we are going to learn about finding the Sum of Digits of a number using JavaScript. The Sum of Digits refers to the result obtained by adding up all the i ...read more

How to Find the Index of Specific Character in a String in JavaScript ?

Last Updated: 01 September 2023

In this article, we will see how to find the index of a specific character in a string using JavaScript. A string is a sequence of characters, such as letters, numbers, or ...read more

JavaScript Program to Convert Decimal to Binary

Last Updated: 01 September 2023

In this article, we are going to learn the conversion of numeric values from decimal to binary. Binary is a number system with 2 digits (0 and 1) representing all numeric ...read more

JavaScript Program to Find Factorial of a Number using Recursion

Last Updated: 01 September 2023

In this article, we are going to learn about finding a Factorial of a Number using Recursion. Calculating the factorial of a number using recursion means implementing a fu ...read more

How to Extract URLs from a String in JavaScript ?

Last Updated: 01 September 2023

In this article, we are given a string str which consists of a hyperlink or URL present in it. We need to extract the URL from the string using JavaScript. The URL must be ...read more

How to Add a key/value Pair to Map in JavaScript ?

Last Updated: 31 August 2023

This article will demonstrate how we can add a key-value pair in the JavaScript map. JavaScript Map is a collection of key-value pairs in the same sequence they are insert ...read more

JavaScript Program to Convert Byte Array to JSON

Last Updated: 31 August 2023

In this article, we are going to learn about the conversion of a Byte Array into JSON. Converting a byte array to JSON means transforming a sequence of bytes into a struct ...read more

JavaScript Program to Print All Duplicate Characters in a String

Last Updated: 31 August 2023

In this article, we will learn how to print all duplicate characters in a string in JavaScript. Given a stringS, the task is to print all the duplicate characters with the ...read more

JavaScript Program to Print Pyramid Pattern by using Numbers

Last Updated: 31 August 2023

A pyramid pattern using numbers is a sequence of numbers arranged in a triangular shape, with each row displaying incrementing or decrementing numbers, creating a visually ...read more

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