Why React uses className over class attribute?

React uses the className attribute over the class attribute primarily because class is a reserved keyword in JavaScript. Since React leverages JSX, which is an extension of JavaScript, using class directly within JSX would conflict with the JavaScript syntax for defining classes.

JSX is designed to resemble HTML, but it is ultimately transpiled into JavaScript code. When JSX code is processed by Babel or another transpiler, HTML-like syntax, including attributes, is converted into JavaScript objects and function calls. If class were used, it would pose issues during this translation because class has a specific meaning in JavaScript—defining classes since ES2015.

Moreover, the use of className in JSX corresponds to the className property on DOM elements in the underlying JavaScript DOM API. When JSX is transpiled, attributes like className are converted to their respective DOM properties, ensuring that the resulting JavaScript is cle...