Selector: Make selectors with leading combinators use qSA again #460
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An optimization added in jquery#431 skips the temporary IDs for selectors not using child or descendant combinators. For sibling combinators, though, this pushes a selector with a leading combinator to qSA directly which crashes and falls back to a slower Sizzle route. This commit makes selectors with leading combinators not skip the selector rewriting. Note that after jquery/jquery#4454 & jquery#453, all modern browsers other than Edge leverage the :scope pseudo-class, avoiding temporary id attributes. Ref jquerygh-431
2 tasks
timmywil
approved these changes
Oct 14, 2019
gibson042
approved these changes
Oct 14, 2019
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An optimization added in #431 skips the temporary IDs for selectors
not using child or descendant combinators. For sibling combinators, though, this
pushes a selector with a leading combinator to qSA directly which crashes and
falls back to a slower Sizzle route.
This commit makes selectors with leading combinators not skip the selector
rewriting. Note that after jquery/jquery#4454 & #453, all modern
browsers other than Edge leverage the :scope pseudo-class, avoiding temporary
id attributes.
Ref gh-431
jQuery PR (for jQuery 4.0): jquery/jquery#4509