In React, we use array destructuring with useState to easily extract and manage state values and their corresponding setter functions. Why Array Destructuring? When you call useState, it returns an array containing two elements: Instead of accessing these values using array indexing (which is not readable), we use array destructuring to assign them meaningful names.…

You can update a React component every second using useEffect with setInterval in a functional component. Here’s an example: Example: Updating a Component Every Second Explanation:

When developing React applications, understanding state and props is crucial. Both are used to manage and pass data within a React component, but they serve different purposes and have distinct behaviors. This tutorial will break down the key differences between React state and props with examples. 1. What is React State? Definition State is a…

1. Introduction In this tutorial, we’ll discuss the useMemo hook which plays important role in performance optimization of the application. The React useMemo hook lets you cache the result of a calculation between re-renders. You call useMemo at the top level of your component to cache a calculation value between re-rendering of the component. 2.…

1. Introduction React takes advantages of purity of components. A component in React should be written as Pure component. In this short tutorial, we’ll discuss what is a pure component with an example. Before discussing pure component, let us discuss a pure function. 2. What is a pure function? A pure function is a concept…

1. Introduction You will often want to show multiple similar components from a collection of data. You can use JavaScript array methods combined with filter() and map() to filter and transform array data to components. 2. Rendering data from arrays Suppose you have a list of fruits. This is a simple example of list of…

1. Introduction You will often need to display different things on the screen based on some condition. In React, you can conditionally render JSX using JavaScript like syntax like if statements, ?: operators and &&. In React, control flow is handled by JavaScript. 2. Example In this example, you can observe that a different JSX…

1. Introduction useId is a React Hook for generating unique IDs that can be passed to accessibility attributes. useId() does not take any parameter and returns a unique ID string associated with this particular useId call in this particular component. Let us understand the usage of useId with the help of an example. HTML accessibility…

1. Introduction useEffect is a React Hook which allows you to synchronize your component with an external system. Here, external system means any piece of code that’s not controlled by React, such as: 2. Signature useEffect has two parameters, setup and dependencies and returns undefined. React calls setup and cleanup code multiple times based on…

1. Introduction In React, the useState hook is a fundamental tool for managing state in functional components. It allows you to add state to your functional components without converting them into class components. useState hook enables you to declare state variables and update them within functional components. Here, state and count are state variables. Call…