![]() Here is another illustration, showing that the Shadow DOM is just a sub-tree of the DOM. But behind the Shadow DOM lies the hidden part, which includes the shadow root and other shadow elements. In the image below, the shadow host is seen in the DOM tree with other elements, but the shadow elements are not seen because they are hidden. Here is a graphical representation showing the DOM and the Shadow DOM. The Shadow DOM API plays a huge role in this, and it helps to attach the separate hidden DOM to an element. It simply provides a way to encapsulate styling so that it doesn’t leak out of components and affect other parts of your site or app. Shadow DOM allows developers to add their styles and scripts without impacting the rest of the page or site. The Shadow DOM is an independent subtree of the document tree, with its root in the document’s. Isolated - The Shadow DOM and the element it’s attached to don’t interact with each other unless we make a specific request between the two.So, the HTML and CSS inside the Shadow DOM don’t affect the parent document outside the element defined by the Shadow DOM. Self-contained - Shadow DOM is separate from the context in which it’s embedded.Fully functional - The Shadow DOM has its own CSS rules that are not applied outside the subtree and its own JavaScript behavior.Shadow DOM is a fully functional, self-contained, and isolated subtree inside an element used for styling and interacting with an element’s children. ![]() This means that Shadow DOM is used to create reusable components or widgets that don’t affect any other part of the page. It allows the encapsulation of HTML tags, styles, and behaviors within a single sub-tree of the DOM tree. ![]() The Shadow DOM is an internal representation of the markup, which is not rendered on the page. So what is the difference between the DOM and the Shadow DOM? The difference is in their behavior and how we use them. Just like we use the DOM to create and modify HTML elements, so is the Shadow DOM. The Shadow DOM is very similar to the DOM. ![]() Good! So what exactly is Shadow DOM? And of what use is it? Put on your seat belt and get ready, because this will be a very exciting ride. We have seen how DOM manipulation has helped us create dynamic and responsive user interactive webpages, bringing our contents to life. We know DOM to be a tree-like structure of the HTML element, which allows us to add, remove and modify the elements present in the HTML document. Let’s get started! DOM and Shadow DOMīefore we go on with Shadow DOM, let’s refresh our minds on DOM and what it does. Do you want to know more? To understand the Shadow DOM, you must know at least the basics of HTML, CSS, and JavaScript, including DOM manipulation. We may add custom CSS properties and classes and custom HTML attributes without polluting the global scope or breaking other elements on our page. We don’t have to directly style and manipulate the DOM to create these “shadows,” but we can use Shadow DOM instead. Shadow DOM allows us to create “shadows” of elements that are self-contained trees with their styles, attributes, and child nodes. Shadow DOM is a technique to isolate and maintain an element’s CSS, HTML, and document tree in a separate subtree.
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