If you are new to Playwright and modern web automation, one of the most important concepts you must understand is the DOM (Document Object Model) . Playwright does not interact with the page the way humans do. It does not “see” buttons, textboxes, or labels visually. Instead, it interacts with the structured HTML representation of the page — the DOM. Before writing stable and reliable automation scripts, you must clearly understand: What is a DOM tree? What are element nodes,