Why does the performance differ so greatly with seemingly the same code?

Does JavaScript performance on Windows machines differ from JavaScript performance on Macs?

  • I know there are browser differences in terms of performance, but are there operating system comparisons or is it purely a matter of hardware?

  • Answer:

    JavaScript performance is almost completely derived from the JavaScript engine running in the browser, Spider/TraceMonkey vs. v8 vs. Nitro vs. JScript (or now, Chakra). Hardware will have a share in the performance as well. This question is more applicable in the mobile realm.

Rick Waldron at Quora Visit the source

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