What is DOM?
The Document Object Model (DOM), an abbreviation for Document Object Model, is a standardized specification outlining the desired appearance of objects within a web page. It serves as an interface that enables a programming language to manipulate the content, structure, and presentation of a website.
Upon loading a web page, the browser generates a Document Object Model representation of the page. Within this DOM, documents possess a logical structure akin to a tree, where the root is the opening tag and subsequent tags act as nodes, forming a hierarchical structure. Remarkably, the DOM exhibits browser and platform independence, achieved through its representation of web document contents as a generic tree structure. This autonomy is upheld through adherence to its own governing standard, overseen by the esteemed World Wide Web Consortium (W3C).
HTML and DOM
The HTML code authored by developers undergoes parsing by the web browser, resulting in the creation of the Document Object Model (DOM). The DOM plays a key role in facilitating dynamic web pages, as it enables the seamless modification of a web page's appearance even after it has been downloaded by a user's browser.
It is important to note that the DOM itself does not dictate the existence of information within a document or define its structure and implementation. Rather, it serves as a representation of a web document or web page, offering developers a standardized approach to accessing and manipulating its entirety through a shared set of properties and methods. Essentially, anything present in an HTML document can be accessed, modified, removed, or appended by using the capabilities of the Document Object Model.
Browsers and DOM