What is DOM in JavaScript?

In JavaScript, the Document Object Model (DOM) is a programming interface that represents the structure of an HTML or XML document and allows you to manipulate its content and style.

The DOM is created by the web browser when a web page is loaded. It defines a standard way of accessing and manipulating the content and structure of a document, and it allows you to programmatically change the content and appearance of a web page.

The DOM is represented as a tree-like structure, where each element in the document is a node in the tree. This allows you to access and modify the document’s elements using JavaScript. For example, you can use the DOM to add or remove elements from the page, change their styles, or listen for events such as clicks or key presses.

Here is an example of how to use the DOM to change the text of an HTML element:

// Get a reference to the element
const element = document.getElementById("my-element");

// Change the element's text
element.innerHTML = "Hello, world!";

In this code, the getElementById method is used to select an element with the my-element ID. The innerHTML property is then used to change the element’s text to “Hello, world!”.

The DOM is an essential part of web development with JavaScript and is used extensively in modern web applications. It allows you to create dynamic and interactive experiences on the web by manipulating the content and appearance of a web page using JavaScript.

I hope this helps! Let me know if you have any questions.