Yes, jQuery does utilize things like querySelectorAll (among other things) when ... | Hacker News

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c_t_montgomery on March 5, 2012 | parent | context | favorite | on: Going Simple with JavaScript

Yes, jQuery does utilize things like querySelectorAll (among other things) when available.

joesixpack2 on March 8, 2012 [–]

Not exactly correct. It uses QSA only under certain conditions. Unfortunately, the fallback code is not compatible with QSA (and not consistent across their "supported" browsers).

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