DOM (Document Object Model)

The DOM represents an XML/HTML document as a tree of nodes. Each node corresponds to

elements, attributes, or text, making it easy to navigate and manipulate programmatically.

DOM Tree Structure

Given XML:

<title>XML Developer's Guide</title>

<author>Author Name</author>

■ Element: <author> Text: →Author Name

■ Element: <publisher> Text: →Publisher Name

Manipulating XML DOM with JavaScript

1. Load XML:

let xmlString = `...`;

let parser = new DOMParser();

let xmlDoc = parser.parseFromString(xmlString, "text/xml");

2. Modify Elements:

xmlDoc.getElementsByTagName("title")[0].textContent = "Advanced XML Guide";

xmlDoc.getElementsByTagName("author")[0].textContent = "Updated Author Name";