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Add mention of Syntax quirks

MasterKia 2023-02-04 21:38:53 +03:30
parent 9cc46ec733
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Filter-performance.md

@ -1,3 +1,5 @@
See also: [Syntax quirks](./Syntax-quirks)
1- Using `:upward()` instead of `:has()` can be more performant. `:upward()` is fast, it just lookup ancestors -- there is only one parent per element, `:has()` has to lookup descendants, there can be many children per elements.
```html