As to the why I don't know, but as to the which the solution is quite easy : do a benchmark.
Michel Belleville
2009/11/10 Adam Tistler <atist...@gmail.com>
> I am using jquery 1.3.2. I was wondering which is faster and why:
>
> $('#my-id .main table tr.my-class') or
> $('#my-id > .main > table > tr.my-class') or
> $('#my-id tr.my-class')
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