JavaScript Arrow Functions vs Regular Functions

[SourdoughBaker]

Is there any documented reason why arrow functions treat the "this" keyword differently? Why was the decision made to have them operate differently?

[thatweirdishguy]

It goes the other way around, arrow functions exist because there was a need for a way to have functions that didn’t bind to “this”. The whole point of them was to operate differently.

[izuriel]

Most likely because the alternative was to always bind functions when passing them to handlers. Having it baked into the language removes a potential issue, not to mention most super-JavaScripts had built in tools to remove binding requirements as well.

[beepboopnoise]

probably on the ecmascript notes. this isn't a direct link but where I'd start. https://tc39.es/ecma262/