1D0-635 · Question #39
JavaScript is most similar to which of the following languages?
The correct answer is A. ECMAScript. See the full explanation below for the reasoning.
Question
JavaScript is most similar to which of the following languages?
Options
- AECMAScript
- BVBScript
- CNetScript
- DMicroScript
How the community answered
(38 responses)- A74% (28)
- B16% (6)
- C5% (2)
- D5% (2)
Community Discussion
8
Quincy P.Apr 15, 2026A is correct. JavaScript is directly based on the ECMAScript specification, meaning ECMAScript is not just similar to JavaScript but is the standardized language definition that JavaScript implements, so the two are essentially the same thing described from different angles.
Dervla O.Apr 18, 2026Mostly right, but "essentially the same thing" glosses over the fact that other languages like ActionScript also implemented ECMAScript, so the spec and the implementation are worth keeping conceptually separate even if JavaScript is today the dominant one.
Renata O.Apr 5, 2026Saw this one and almost second-guessed myself, but A is right because JavaScript implements the ECMAScript standard.
Quincy P.Apr 7, 2026Correct call, and worth adding that browser vendors each ship their own ECMAScript engine, so the same spec-compliant code can behave differently across implementations, which is exactly why client-side input validation is never a substitute for server-side sanitization.
Fatima Z.May 17, 2026I almost bubbled in B because VBScript sounds like a scripting sibling, but then my hook fired loud and clear, JS IS ES, meaning JavaScript literally IS ECMAScript since JS was built to implement that specification, and A locked in like a deadbolt.
Renata O.May 18, 2026That instinct is right, though it helps to flip the framing just a little: ECMAScript is the specification and JavaScript is the implementation, so saying JS IS ES is close but the spec came first and named the language, not the other way around.
Dervla O.May 8, 2026That one is a giveaway once you know the history, because JavaScript is literally an implementation of the ECMAScript standard, so calling them "similar" is almost an understatement. Do you know why the two names exist separately, and what the practical difference is between them when you sit down to write code?
Grace U.Apr 26, 2026This one tripped me up too when I first saw it, because I almost second-guessed myself thinking the question was some kind of trick. When I sat for that exam and hit this question, I took a breath and remembered that ECMAScript is literally the formal specification that JavaScript is built on, standardized by ECMA International, so the two are not just similar but essentially two names for the same underlying language at different levels of formality. VBScript is a Microsoft thing tied to Visual Basic, and the other two options are not real languages at all, just noise put there to make you hesitate. Once you remind yourself that JavaScript was standardized as ECMAScript so browsers and engines would implement it consistently, A is the only answer that makes any sense.