Preface this article shows you how to use React and DOM things to achieve a compelling interactive hover box effect. By hovering over the mouse, the box will randomly change the color and display shadows, adding dynamic and visual appeal to the page. Read this article and you'll learn how to use React to implement event handling and dynamic styling, bringing more interesting interactions to your Web application. scene in modern Web applications, interactivity and dynamic effects are critical to improving the user experience. Hovering effect is a common way of user interaction, when the user hovers the mouse over a specific area, the relevant elements will change to attract the user's attention. In this article, we will explore how to use React to implement a CSS special effect of a hover square effect. Let's take a look at → Development first, import React and some necessary hook functions, as well as the stylesheet we will use in the component. As follows: import React, { useEffect, useRef, useState } from 'react'; import './index.less' The code for the index.less file is as follows: .App { background-color: #111; display: flex; align-items: center; justify-content: center; overflow: hidden; margin: 0; } .container { display: flex; align-items: center; justify-content: center; flex-wrap: wrap; max-width: 600px; overflow: hidden; } .square { background-color: #333; box-shadow: 0 0 2px #000; height: 16px; width: 16px; margin: 2px; transition: 2s ease; } .square:hover { transition-duration: 0s; } then defines an array of colors and a constant SQUARES to set the number of squares. As follows: const colors = ['#861104', '#7611a0', '#127ec7',…