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Use the addEventListener method in React's functional components: Set the ref attribute on the element. Use the current attribute on the ref to access the element. Add the event listener in the useEffect hook. import {useRef, useEffect} from react ; c...

The react-hooks/exhaustive-deps rule warns us when dependencies are missing in effect hooks. To get rid of the warning, move the function or variable declaration inside the useEffect hook, remember arrays and objects that change on each render, or dis...

To set a background image with inline styles in React: Set the style attribute on the img element. Set the backgroundColor property in the style object. For example, backgroundImage: url(${MyBackgroundImage}) . // ?️ import the image import M...

Passing data from child to parent in React: Pass a function as a prop to the Child component. Call the function in the Child component and pass the data as an argument. Access the data in the Parent function. import {useState} from react ; funct...

To select a radio button by clicking its text in React: Add a label element for each radio button. The htmlFor attribute of each label should be set to the ID of each radio button. Click the label element to select the radio button. import React , {us...

To check if an element contains a class in React: Set the ref attribute on the element. Use the classList.contains() method on the ref object to check if the class exists. The method returns true if the element's class list contains the class....

Handle onScroll events on div elements in React Handle onScroll events in React: Set the onScroll property on the element to listen for scroll events. Provide an event handling function. Access the event.currentTarget.scrollTop property to get the ver...

To reset a file input in React, set the input's value to null in the handleChange function, e.g. event.target.value = null . Setting the element's value attribute to null resets the file input. const App = () = { const handleFileChange =...

To remove an element from the state array in React: Iterate the array using the filter() method. In each iteration, check if the condition is met. Set the state to the new array returned by the filter method. import {useState} from react ; export defa...

Applying multiple classes to a JSX element works a little differently than in HTML. Let's look at how it works....

Handling events in React is key to building modern web applications. This is how you handle the onKeyDown event on a div...

React Router includes a history package, which is similar to the history prop of the window object. In this guide, we will look at the differences between the two....

This tutorial demonstrates how to set up react-router authentication in React....

In this article, we will discuss these two React Router libraries and explain the similarities and differences between them....

In this article, we'll explore all the basic components in React Router and show how to access parameters from child components....