JavaScript is a versatile and widely-used programming language that powers the dynamic behavior of websites and applications. This guide is crafted to help you revisit and reinforce your understanding of essential JavaScript concepts, whether you're preparing for technical interviews, enhancing your coding skills, or exploring modern web development practices. By delving into key topics such as data types, hoisting, variable declarations, and advanced features like ES6 syntax and asynchronous programming, you'll gain a deeper appreciation of JavaScript's capabilities. With practical examples and clear explanations, this guide aims to equip you with the knowledge and confidence to solve JavaScript challenges effectively.

Are you building a React app and want to publish it using Azure? This guide will walk you through deploying your React app to Azure Static Web Apps using Azure DevOps Repos and Azure Pipelines — without GitHub.

Even if you're a beginner, don’t worry. I’ll guide you step-by-step, just like a teacher explaining things in a classroom. 😊

Avoid too many nested If Else​

Nested if-else statements should be avoided. Maintain the code's linearity and simplicity.

Consider using an if-else statement that is nested and does not take advantage of the power of the return statement.

In this post we will learn how to add support of TypeScript to your React Js application having webpack and babel configured.

Please note that in this post I’m going to modify previously setup React Js application to add support for TypeScript. If you haven’t yet gone through that post then please start with Setup Webpack and Babel for a React Js Application and come back to this post.

Introduction​

As a beginner in React.js, I used to setting up my react application using a single command line tool called create-react-app (CRA) which is a open source project developed by developers at Facebook for bootstrapping your react application and serve a simple boilerplate. But as a developer I’m always curious to understand what actually this command does ? What are the other dependencies required to serve a react application ? As a beginner I was thinking like react-scripts is the only dependency that required to build and run react app. But as I drill down more in React I get to know more about transpiler and bundler.

Why is this error occurring?​

You will get error something like this: TypeError: replaceAll is not a function while using replaceAll() function because whatever version of node js or browser does not support this function.