Major FB games were all AS3, which was a very standard language. If you’re familiar with C# or Java you’d be totally unsurprised.
In fact, Adobe hoped it would become the new JavaScript. The history of ECMA 4 was fascinating[1].
In fact, Adobe hoped it would become the new JavaScript. The history of ECMA 4 was fascinating[1].
In a surprising twist of history, AS3's ideas were rediscovered years later with a language called Typescript that among other things added classes and static typing...
Flash development's language and tools were surprisingly ahead of their time!
That's a bit jumbled. AS3 was an early implementation of the ECMAScript 4th edition spec - Macromedia/Adobe implemented it expecting that the same changes would soon be coming to standard JS. ECMA later wound up abandoning that spec (for reasons unrelated to Flash), leaving AS3 sort of stranded as its own separate language.