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Is JavaScript guaranteed to be single-threaded?

Asked 2010-04-29T00:24:54.127
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JavaScript is known to be single-threaded in all modern browser implementations, but is that specified in any standard or is it just by tradition? Is it totally safe to assume that JavaScript is always single-threaded?

javascript concurrency
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Well, Chrome is multiprocess, and I think every process deals with its own Javascript code, but as far as the code knows, it is "single-threaded".

There is no support whatsoever in Javascript for multi-threading, at least not explicitly, so it does not make a difference.

answered 2010-04-29T00:28:57.497

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