react element update in main
What is element in reactjs In React.js, an element is the smallest building block of a user interface (UI). It is a plain JavaScript object that describes a DOM node or a component instance. React elements are immutable, meaning that once they are created, they cannot be changed. Here's a breakdown of what you need to know about React elements: Key Concepts: * Representation of DOM nodes: React elements are not actual DOM elements. Instead, they are lightweight descriptions of what you want to see on the screen in terms of DOM nodes (like , , , etc.) or other components. * Immutability: React elements are immutable. Once you create an element, you cannot change its properties or children. This immutability helps React optimize rendering and improve performance. * Creation: You can create React elements using: * JSX: A syntax extension that looks like HTML but gets transformed into JavaScript function calls to create elements. * React.createElement(): The underlying functio...
