js - check if a function is completed

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Lewis

I want to set a hotkey to several functions by jquery hotkeys. And I need to check if a function is finished, may be something like:

if("function A is completed")
{
    "Ctrl+A is now set to function B"
}
else
{
    "Ctrl+A is set to function A"
}

How could I check this? Or any better ideas?

T.J. Crowder

JavaScript on web browsers is single-threaded (barring the use of web workers, and even with those a function can't be interrupted), so except for a couple of ~~bugs in~~ issues with Firefox, a function cannot be interrupted in the middle. So if your code is running, the other function is not, by definition.

(For details on the issues with Firefox, see this answer by bobince about some very edge-case scenarios.)

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에서 수정2021-05-30

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