Styles – we can see CSS applied to the current element rule by rule, including built-in rules (gray).To do so, open the web page elk.html, turn on the browser developer tools and switch to the Elements tab.Īt the right part of the tools there are the following subtabs: Actually, that’s what we use when developing. Just type in the document, and it will show up as a DOM at an instant.Īnother way to explore the DOM is to use the browser developer tools. To see the DOM structure in real-time, try Live DOM Viewer. comments – sometimes we can put information there, it won’t be shown, but JS can read it from the DOM.element nodes – HTML-tags, the tree building blocks.In practice we usually work with 4 of them: The document object that represents the whole document is, formally, a DOM node as well. We are not going to touch that node, we even don’t draw it on diagrams, but it’s there. ![]() But there’s a rule – if something’s in HTML, then it also must be in the DOM tree.Įverything in HTML, even comments, becomes a part of the DOM.Įven the directive at the very beginning of HTML is also a DOM node. We may think – why is a comment added to the DOM? It doesn’t affect the visual representation in any way. We can see here a new tree node type – comment node, labeled as #comment, between two text nodes. In other cases everything’s straightforward – if there are spaces (just like any character) in the document, then they become text nodes in the DOM, and if we remove them, then there won’t be any.
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