Category: React

Is it safe to store a JWT in localStorage with ReactJS? Published on October 1, 2022 JSON Web Tokens (JWTs) have become a popular way to handle authentication and authorization in web applications. With ReactJS being a widely used JavaScript library for building user interfaces, developers often wonder whether it is safe to store a…

Adding an .env file to a React project When working on a React project, you may come across the need to store sensitive information such as API keys, database credentials, or other configuration variables. It’s important to keep this information secure and separate from your codebase. One way to achieve this is by using an…

Is it possible to use if…else… statement in React render function? React is a popular JavaScript library for building user interfaces. It provides a declarative approach to building UI components, where you define how your UI should look based on the current state of your application. One common question that arises when working with React…

React.Component vs React.PureComponent When working with React, you may have come across two similar-sounding components: React.Component and React.PureComponent. While they may seem interchangeable at first, there are some key differences between the two that can greatly impact the performance of your application. In this article, we will explore the differences between React.Component and React.PureComponent and…

How to Fix “npm ERR! code UNABLE_TO_GET_ISSUER_CERT_LOCALLY” Error If you are a JavaScript developer, chances are you have encountered the “npm ERR! code UNABLE_TO_GET_ISSUER_CERT_LOCALLY” error at some point. This error occurs when npm, the package manager for Node.js, is unable to get the issuer certificate locally. It can be frustrating, but don’t worry, there are…

Unable to access React instance (this) inside event handler One common issue that developers face when working with React is the inability to access the React component instance (this) inside an event handler. This can be frustrating, especially when you need to access component state or props within the event handler. In this blog post,…

What does this “react-scripts eject” command do? If you have been working with React, you might have come across the “react-scripts eject” command. But what exactly does it do? In this article, we will explore the purpose and functionality of this command, as well as alternative solutions. Understanding “react-scripts eject” The “react-scripts eject” command is…

How can I force a component to re-render with hooks in React? React hooks have revolutionized the way we write components in React. With hooks, we can easily manage state and side effects in functional components. However, there may be times when we need to force a component to re-render, even if the state or…

React is a popular JavaScript library used for building user interfaces. One of the features introduced in React 16.3 is the Strict Mode, which helps identify potential problems in your code and encourages best practices. However, one common issue that developers face when using Strict Mode is that their React components end up rendering twice.…

React-Router: No Not Found Route? React-Router is a powerful library for routing in React applications. It allows you to define routes and render different components based on the current URL. However, one common issue that developers face is how to handle routes that do not match any defined routes. In other words, what should happen…