The Document Object Model (DOM) is a programming interface for HTML and XML documents. It represents the structure of a document as a tree-like structure, where each node in the tree represents an element, attribute, or text content in the document.

JavaScript provides a set of functions and classes for working with the DOM, including methods for creating, modifying, and querying elements, as well as handling events.

JavaScript’s DOM functions and classes can be divided into several categories:

  • Document: this includes the Document object, which represents the entire HTML or XML document and provides methods for manipulating the structure and content of the document.
  • Element: This includes classes such as HTMLElement, which represent an HTML element and provide methods for manipulating the attributes, content, and style of the element.
  • Event: This includes classes such as Event and EventTarget, which provide methods for processing and responding to events such as clicks, mouse movements, and keystrokes.
  • Node: This includes classes such as Node, which represent a node in the DOM tree and provide methods for processing the node’s parent and child nodes.
  • Selector: These include functions such as document.getElementById(), document.querySelector(), and document.querySelectorAll(), which are used to select elements from the DOM by their ID, class, or tag name.

By using these functions and classes, developers can create dynamic and interactive web pages and develop a variety of web applications.

In this section, we will delve deeper into the functions and classes provided by Monster and provide examples of their usage for manipulating the DOM and handling events.