The Document Object Model (DOM) is a cross-platform programming interface that uses nodes and objects to represent HTML and XML texts. It explains the logical structure of documents as well as how they are accessed and changed in simple words. The document structure, style, and content may all be created, modified, and deleted using the DOM.
When a document is shown in a browser, the document’s content and style information must be merged. HTML and CSS are converted into the DOM by the browser. The document’s content and style are combined in the DOM.