JavaScript program for number of pairs with maximum sum is a common coding problem that involves finding the number of pairs in an array that have the maximum sum. This problem can be solved using various approaches which we will be discussing with code examples and their stepwise explanation. In this article we are having an array of integers. Our task is to write a JavaScript program for number of pairs with maximum sum. Example 1 Input: array = [1, 2, 3, 4, 5] Pair sum of (1, 2) = 3, Pair sum of (1, 3) = ... Read More

In this article, we will learn how to copy text to the clipboard in ReactJS. There are two most commonly used methods: the copy-to-clipboard package and the Clipboard API. The copy-to-clipboard package provides a copy() function that allows us to copy text. The Clipboard API is a web browser API that also provides a few functions for clipboard interaction, including copying text. Prerequisites Installed npm ReactJS useState hook Approaches to Copy Text to Clipboard There are two primary approaches to copying text to the clipboard in ReactJS: ... Read More

In this article, we will learn how to programmatically navigate using React Router. Programmatic navigation enables changing the URL of an application without reloading the page. We can use several approaches to programmatically navigate in a React application using React Router. Approaches to navigate using React Router To programmatically navigate a React application, we can use several methods based on the version of React Router. In React Router v6, the useNavigate hook is introduced, which is recommended for programmatic navigation. By calling the navigate function returned from useNavigate, we can navigate to other routes. In React Router v5, the ... Read More

Passing data from one component to another is an essential part of building complex React applications. React props and states are fundamental concepts in React. Props stand for properties, which are used for passing data from one component to another, while State is used to manage data within a component. Prerequisites ReactJS Props ReactJS State Passing Data from Child Component to Parent You can easily pass data from a parent component to a child component with the help of props. Passing data from a child component to a ... Read More

In this article, we are going to learn how to iterate on list or collection of data dynamically. However, directly using a loop is not a valid syntax in JSX. It is crucial to understand how to use loops inside React JSX. By iterating on arrays or any collections of data, we can render the component dynamically. Prerequisites ReactJS JSX Approaches to Loop inside React JSX The map() function and other methods can be used to repeat elements in JSX when we need to iterate over a list ... Read More

In this article, we are going to cover the implementation of dynamically showing or hiding elements in React. To understand this concept, you must be familiar with hooks in React. By leveraging hooks like useState, you can toggle and update the state to effectively control the visibility of an element. Approaches to Show or Hide Elements in React Using && Operator Using return null Using && Operator We have to change the state when a button is clicked, then it will determine the visibility of the element. With ... Read More

Unique IDs are used to differentiate multiple elements from each other, maintain the internal state of components, or create a key for user data. In this article, we will explain all the approaches to creating unique IDs for a set of elements in React JS. Approaches to Create Unique ID in React JS Here is the list of approaches for creating unique IDs in React JS, which we will be discussing in this article with stepwise explanations and complete example codes. Using uuid Library Using Timestamps ... Read More

Prop Drilling is a common mistake beginners make while building React apps. It can cause reduced code readability and even performance issues for the app. In this article, I will explain what are props, prop drilling, and how to avoid prop drilling using context APIs. Table of Content What are Props? Prop Drilling Why to Avoid Prop Drilling? Fix Prop Drilling With Context API Prerequisites Good knowledge of React, useState Hook, and useContext Hook. ... Read More

JSON files are used in APIs to transfer data from server to client in the form array. This transferred data needs to be displayed in the user interface, such as in tables or any other components. In this article, we will demonstrate how to display JSON data using a React Table. Prerequisites To display a JSON file in React.js, we need to have a basic understanding of the React.js library. Basic knowledge of React, useState Hook, and useEffect Hook. Ensure Node.js and React are installed on your system. ... Read More

A timetable is an essential tool for organizing daily activities and improving productivity. In this article, you will get to know how to create a simple and effective weekly timetable using HTML. This timetable will include time slots, subjects, and lunch breaks, along with highlighting weekends as holidays. HTML Tags used to create Time - Table The main tag used for creating a table is the  tag in HTML elements. Tables allow us to represent structured data in rows and columns, which makes them perfect for displaying time schedules. List of tags required to create a time-table ... Read More