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Editorial Team
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Asked: 2026-06-14T13:42:59+00:00

I wanted to ask a few questions about javascript: 1.Does each browser implement javascript

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I wanted to ask a few questions about javascript:

1.Does each browser implement javascript by itself ? Or is their a common SDK\API or whatever ?

2.If each browser implement by itself, Is the javascript engine bounded to the browser version ?

I mean, can I have 2 different engines for the same browser version ?

3.Is there any standards all javascript engines must follow ? Does this standard define memory

allocation ? (Lets say, How I allocate a javascript string ?)

And last,

What are the names of implementation for each browser ? For example I understood FirFox uses an

implementation called “Rhino”, Am I right ?

Thanks alot !
Michael

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1 Answer

  1. Editorial Team
    1. Yes, they implement JavaScript on they’re own.
    2. Yes, it is bound to the browser version. No, you can’t have 2 different engines for the same browser version. You can though for different browser versions.
    3. Yes, it is called EcmaScript. Most implementation follow it pretty good.
    4. FireFox does not use Rhino. Mozilla developed it, but the implementation in FireFox is different. All browsers implement single-threaded JavaScript, while Rhino is not single-threaded.
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