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JavaScript closest

by admin
2 years ago
in Softwares
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In relation to discovering relationships between components, we historically consider a top-down strategy. We will thank CSS and querySelector/querySelectorAll for that relationship in selectors. What if we need to discover a component’s guardian based mostly on selector?

To look up the factor tree and discover a guardian by selector, you should use HTMLElement‘s closest methodology:

// Our pattern factor is an "a" tag that matches ul > li > a
const hyperlink = doc.querySelector('li a');
const listing = a.closest('ul');

closest appears up the ancestor chain to discover a matching guardian factor — the alternative of conventional CSS selectors. You possibly can present closest a easy or advanced selector to look upward for!

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