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Articles by Kalyan Mishra
57 articles
How do I evaluate blockchain implemented in JavaScript?
Blockchain is a chain of blocks that contains information. In 2009, this technology was later adapted by Satoshi Nakamoto to create the digital cryptocurrency Bitcoin. This technology is completely open to anyone who wants to develop or analyze it. Blockchain has a feature that makes it very complex to make changes once data has been recorded in a block of the chain. Here are the key terms used in blockchain programming: Block − Contains information like data, hash value, and previous block hash value. Data − Information stored in the block (for cryptocurrency: transaction details like ...
Read MoreWhat is the best way to learn Vanilla JavaScript?
Learning Vanilla JavaScript is essential for building a solid foundation in web development. Vanilla JavaScript refers to pure JavaScript without any frameworks or libraries like React, Angular, or Vue.js. This approach helps you understand the core language mechanics before diving into frameworks. Vanilla JavaScript vs JavaScript Frameworks Vanilla JavaScript is the core JavaScript language (ES5/ES6/ES7+) without external libraries. While frameworks like React or Angular provide pre-built solutions, vanilla JavaScript gives you complete control and deeper understanding of how things work under the hood. JavaScript is an object-oriented, interpreted scripting language that runs in browsers and adds interactivity ...
Read MoreWhy JavaScript is Used in Blockchain?
JavaScript has become a prominent language in blockchain development due to its versatility, widespread adoption, and powerful ecosystem. While it may not be the most precise language in terms of type safety, its practical advantages make it an excellent choice for building blockchain applications. The primary reason JavaScript excels in blockchain development is its ability to run on both client-side and server-side environments. This full-stack capability makes it ideal for building decentralized applications (dApps) that require seamless integration between front-end interfaces and back-end blockchain interactions. Key Advantages of JavaScript in Blockchain Wide Developer Community JavaScript is one ...
Read MoreHow to remove fake JavaScript pop-up messages and warnings?
Fake JavaScript pop-up messages and warnings are typically used for malicious purposes, such as tricking users into downloading malware or providing sensitive information. These fake popups and messages often appear to be legitimate alerts from trusted sources, such as a user's operating system, web browser, or security software, in order to deceive the user into taking a particular action. Clicking popup can forward you to malicious websites. There are several types of fake pop-ups that you may encounter while browsing the internet. Here are some of the most common types: Types of Fake Pop-ups Fake Virus Warnings ...
Read MoreHow to Test JavaScript Code Automatically?
Testing JavaScript code automatically helps ensure our code works as intended and catches bugs early in development. This article covers the main types of automated testing and popular frameworks for JavaScript applications. Types of JavaScript Testing Unit Testing Unit testing verifies individual functions, modules, or components in isolation. The goal is to test the smallest pieces of code to ensure they work correctly. Popular JavaScript unit testing frameworks include Jest and Mocha. Integration Testing Integration testing verifies how different parts of your JavaScript code work together. It ensures that various components interact properly when combined. Frameworks like ...
Read MoreAs a developer, how much do you use JavaScript?
JavaScript is an object-oriented, interpreted scripting language that serves as the backbone of modern web development. It's primarily a client-side scripting language used to create dynamic and interactive websites. While HTML structures web content and CSS handles styling, JavaScript adds functionality like interactivity, animations, and real-time user experiences. Beyond web browsers, JavaScript has expanded into mobile application development, server-side implementation, and game development. Developers frequently use JavaScript with popular front-end frameworks like React.js, Angular.js, and Vue.js to build complex, dynamic web applications. In full-stack development, JavaScript powers both front-end interfaces and back-end services through Node.js. Why We Need ...
Read MoreHow to check two numbers are approximately equal in JavaScript?
In JavaScript, determining if two floating-point numbers are "approximately equal" is essential because of precision issues with decimal calculations. We compare the absolute difference between two numbers against a tolerance value called epsilon. Why Use Approximate Equality? Floating-point arithmetic can produce unexpected results: console.log(0.1 + 0.2); // 0.30000000000000004 console.log(0.1 + 0.2 === 0.3); // false 0.30000000000000004 false The Algorithm We calculate the absolute difference between two numbers and compare it with epsilon (tolerance). If the difference is less ...
Read MoreHow to create HTML list from JavaScript array?
In this tutorial, we will explore multiple ways to create an HTML list from a JavaScript array. While you can manually create HTML lists using ul (unordered list) and li (list item) tags, this becomes impractical when dealing with dynamic data or large arrays. JavaScript provides efficient methods to dynamically generate HTML lists from array data. Let's examine three different approaches to accomplish this task. Method 1: Using the for Loop The simplest approach uses a traditional for loop to iterate through the array and create list items dynamically using createElement() and appendChild(). ...
Read MoreHow to build a random quote generator using HTML, CSS, and JavaScript?
In this tutorial, we'll build a random quote generator using HTML, CSS, and JavaScript. The application fetches quotes from an API and displays them in an elegant interface with a button to generate new quotes. Project Overview Our quote generator will include: Clean HTML structure with quote display area Responsive CSS styling with hover effects JavaScript logic to fetch quotes from type.fit API Random quote selection and display functionality HTML Structure First, let's create the HTML template ...
Read MoreHow to swap two array elements in JavaScript?
In this tutorial, we explore different approaches to swap two array elements in JavaScript. For example, we can swap the first and second elements of an array: Input: ["first", "second", "third", "fourth", "fifth"] Output: ["second", "first", "third", "fourth", "fifth"] Here we swapped "first" and "second" values of the array. We will explore three different methods to swap array elements: Using a temporary variable Using Array Destructuring (ES6) Using Array splice() Method Using a Temporary Variable ...
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