With regards to discovering relationships between components, we historically consider a top-down method. We are able to thank CSS and querySelector/querySelectorAll for that relationship in selectors. What if we wish to discover a component’s mum or dad based mostly on selector?
To look up the aspect tree and discover a mum or dad by selector, you should utilize HTMLElement‘s closest methodology:
// Our pattern aspect is an "a" tag that matches ul > li > a
const hyperlink = doc.querySelector('li a');
const record = a.closest('ul');
closest seems to be up the ancestor chain to discover a matching mum or dad aspect — the alternative of conventional CSS selectors. You’ll be able to present closest a easy or advanced selector to look upward for!
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