Category: React

How to Change Jest Mock Function Return Value in Each Test? When writing tests with Jest, you may come across situations where you need to change the return value of a mock function for each individual test. This can be useful when you want to simulate different scenarios or test different branches of your code.…

Handle an input with React hooks React hooks have revolutionized the way we handle state and side effects in functional components. One common use case is handling user input, such as capturing values from input fields. In this blog post, we will explore how to handle an input with React hooks. Using the useState hook…

How to Register Event with useEffect Hooks? In JavaScript, events are a fundamental part of web development. They allow us to respond to user actions, such as clicks or keyboard inputs. When using React, we can register events using the useEffect hook. In this blog post, we will explore how to register events with useEffect…

When working with JavaScript, you may come across the error message “Support for the experimental syntax ‘jsx’ isn’t currently enabled.” This error typically occurs when you are using JSX syntax in your code, but your environment doesn’t have the necessary configuration to handle it. JSX is a syntax extension for JavaScript that allows you to…

How to Use jQuery with ReactJS ReactJS is a popular JavaScript library for building user interfaces, while jQuery is a fast and concise JavaScript library that simplifies HTML document traversing, event handling, and animating. Combining the power of both libraries can provide developers with additional flexibility and functionality when working on ReactJS projects. In this…

When working with React components, there may be situations where you need to conditionally add attributes to them based on certain conditions. This can be achieved using various approaches. In this article, we will explore two common solutions to conditionally add attributes to React components. Solution 1: Using the Ternary Operator The ternary operator is…

Parse Error: Adjacent JSX elements must be wrapped in an enclosing tag If you have been working with JavaScript and JSX, you might have come across the error message “Parse Error: Adjacent JSX elements must be wrapped in an enclosing tag”. This error occurs when you have multiple JSX elements that are not enclosed within…