The Document Object Model (DOM) is a programming interface for web documents. It represents the structure of an HTML or XML document as a tree of objects, allowing developers to manipulate content, structure, and style using JavaScript.

To select an element from the DOM, you can use the following JavaScript methods:

getElementById(id) – Selects an element by its ID.
getElementsByClassName(className) – Selects elements by their class name.
querySelector(selector) – Selects the first element that matches a CSS selector.
querySelectorAll(selector) – Selects all elements that match a CSS selector.

To manipulate an element's attribute, you can use methods like setAttribute to change the value of an attribute, getAttribute to retrieve its value, and removeAttribute to remove an attribute. To manipulate an element's style, you can use the style property to directly modify inline CSS, such as changing colors, sizes, or other styles.

Event handling in the DOM refers to the process of responding to user interactions with elements on a webpage, such as clicks, mouse movements, or keyboard inputs.

Event Listeners: Used to attach functions to elements that execute when specific events occur.
Common Events: Include click, mouseover, keydown, and submit.
Event Methods: You can use methods like addEventListener() to listen for events and removeEventListener() to remove event listeners.