Learn how to apply tree traversal algorithms, specifically pre-order traversal, to navigate the Document Object Model (DOM). The post illustrates how to create functions like locateById and locateAllByClassName without using built-in APIs, and explores memoization for optimizing repeated queries. It also delves into implementing custom querySelector and querySelectorAll functions and demonstrates how to clone a DOM tree using recursive traversal.

6m read timeFrom stackfull.dev
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Permalink DOM traversal overviewPermalink Dealing with more complex selectorsPermalink Bonus
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