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by untog
2239 days ago
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> That is, even if child components got -rerendered (in react terms), there might not be a DOM update at all (which is the slow, costly operation). Crawling a large React tree's render stack is also a costly operation. Not as much as DOM manipulation but it is still costly, and React is created in such a way that it requires you to include everything in that stack, even if it never changes. Which is one reason we have Portals. |
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