Bug Tracker

Opened 12 years ago

Closed 12 years ago

Last modified 11 years ago

#8437 closed bug (wontfix)

Using Multiple Selectors to search by tag name is significantly slower since 1.4.3

Reported by: [email protected] Owned by: [email protected]
Priority: undecided Milestone: 1.next
Component: selector Version: 1.4.3
Keywords: Cc:
Blocked by: Blocking:


Starting in jQuery 1.4.3, finding elements using multiple selectors and tag names is dramatically slower (10-30x slower). For example .('input,select') now takes much longer.

See performance tests at: http://jsperf.com/jquery-selector-performance-problems

Change History (3)

comment:1 Changed 12 years ago by Rick Waldron

Component: unfiledselector
Owner: set to [email protected]
Status: newpending

I'm getting different results with a perf test that we've used on other recent dom traversal/manipulation...


comment:2 Changed 12 years ago by [email protected]

Status: pendingnew

Interesting, it seems to perform fine in your test when searching for divs/spans, but it's still slow searching for inputs/selects.

In this version, I took your test, increased the count from 500 to 1000 (to help emphasis the slowness), and repeated all of your tests but searched from 'input,select' instead of 'div,span'.


comment:3 Changed 12 years ago by Rick Waldron

Resolution: wontfix
Status: newclosed

In 1.4.3, Sizzle began branching as much selector work to querySelectorAll, which results in less work and overall higher performance.

Note: See TracTickets for help on using tickets.