It maintains two copies one is the real copy of the DOM (react DOM) and another one is the change to be done. This helps to show the relevant information which represents what a user is trying to achieve in the context of updating his buying choice.įor this insertion and deletion operation on HTML DOM, there is a memory cost involved.Virtual DOM acts as a performance optimizer as far as the DOM update operations are concerned. In the above scenario, the DOM needs some changes which involve addition and deletion of certain HTML nodes. As we have mentioned, the HTML document is represented by the DOM tree. The cart is showing the updated item to reflect the user’s decision.īehind the scene, the HTML document undergoes a certain transform which helps to share the updated page. When the user is interacting on a page, it involves addition and insertion of information based on the user activity. It relies heavily on Virtual DOM, which acts as a performance optimization to DOM operations.Ī Web page which is composed of HTML has a DOM tree, with the help of which the web page is rendered by the browser. The webpage can be represented in the form of Parent and Child based components. ![]() It is based on the components-based architecture. React is a library which helps web developers and architects to serve the needs of customers having demands of high data flow and fast responsive UIs in the context of data. Before the installation, we need to have a quick understanding of React. In this tutorial, we will install the react library on macOS.
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