Overview
Shadow DOM allows a component to have its own 'shadow' DOM tree that cannot be accidentally accessed from the main document. This ensures that the component's internal structure and styles remain isolated.
Key Concepts
- Shadow Host: The regular DOM node that the shadow DOM is attached to.
- Shadow Tree: The internal DOM tree inside the shadow DOM.
- Shadow Boundary: The line where the shadow DOM ends and the regular DOM begins.
- Shadow Root: The root node of the shadow tree.
Benefits
- Scoped CSS: Styles defined inside the shadow DOM do not affect the rest of the page.
- DOM Isolation: Prevents external scripts from accidentally breaking the component's internals.