Opened 11 years ago
Closed 11 years ago
#9481 closed bug (wontfix)
Performance optimization?
Reported by: | anonymous | Owned by: | |
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Priority: | low | Milestone: | 1.next |
Component: | core | Version: | 1.6.1 |
Keywords: | needsreview | Cc: | |
Blocked by: | Blocking: |
Description
Just ran into this via StackOverflow:
https://github.com/matjaz/jquery.fly/
http://jsperf.com/jquery-fly/4
I've no idea on the merit of the code, but an occasional x4 performance seems like an idea worth investigating...
Change History (8)
comment:1 Changed 11 years ago by
comment:2 Changed 11 years ago by
Ref stackoverflow: http://stackoverflow.com/questions/6198633/what-is-jquery-fly-plugin-used-for
Could potentially be a reasonable performance gain when iterating over a large number of items, though could cause problems using .context, .selector, etc, although it's worth investigating where jQuery can be cached wherever reasonably possible.
comment:3 Changed 11 years ago by
I think this is a pattern to be applied externally, rather than exposed from jQuery core itself. In many $.each
loops there may not be a need at all for a jQuery
object and creating one unnecessarily would waste time/memory.
comment:4 Changed 11 years ago by
Status: | new → open |
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Went through 1.6.1 and there do seem to be some places where we can create one jQuery object outside the scope and just update the single element rather than constructing with jQuery(this)
. Might be worth a look.
comment:5 Changed 11 years ago by
Component: | unfiled → core |
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comment:7 Changed 11 years ago by
FWIW, I explained over on #9525 that I don't think these two are duplicates, but they are simiilar in spirit.
comment:8 Changed 11 years ago by
Keywords: | needsreview added |
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Priority: | undecided → low |
Resolution: | → wontfix |
Status: | open → closed |
If this is a pattern that you find useful then feel free to use it, however we feel that this is not a suitable addition to the jQuery Core.
There may actually be some situations where calling the full jQuery constructor is unneccesary. This could actually be of use internally as a micro-optimisation.