[Bug 24115] Introduce CSS.isValidSelector()


--- Comment #2 from Simon Pieters <simonp@opera.com> ---
Can we start with the use case? Why do people want to know if there was a
syntax problem? (To polyfill selectors that aren't supported natively?)

Is the problem that people trigger and catch an exception from query() 100,000
times or 1,000,000 times and it becomes a performance problem?

Is the problem that query() is slow even if no exception is thrown, because it
*can* throw? Is it only when it is invoked with the same argument on the same
object in a tight loop?

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Received on Tuesday, 17 December 2013 14:23:20 UTC