Angular Interview Practice

What is the main purpose of the DOM?

1. To store data in a database

2. To provide a structured representation of a document

3. To improve web page loading speed

4. To handle server-side operations

The correct answer is: To provide a structured representation of a document

The main purpose of the DOM, or Document Object Model, is to provide a structured representation of a document, typically HTML or XML. The DOM acts as an interface that browsers use to understand the hierarchy and structure of the web page, allowing developers to manipulate the content, structure, and style of the document dynamically using languages like JavaScript. When a web page is loaded, the browser creates a DOM tree that represents the elements of the page, such as headings, paragraphs, links, and other HTML tags. This tree structure allows for easy access and manipulation of the elements, enabling developers to add, remove, or modify content and attributes on the fly. This dynamic interaction enhances user experiences significantly since changes can occur based on user actions without requiring a full page reload. Understanding the role of the DOM is critical for web development, as it forms the foundation for client-side scripting and interactive features on modern websites. The other options presented do not accurately define the primary purpose of the DOM. While storing data in a database, improving web page loading speed, and handling server-side operations are important aspects of web development, they are not functions of the DOM itself. Instead, they pertain to back-end processes, optimization techniques, or external data management that interact with