JS used to have those, now they are deprecated though: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/__defineGetter__

JS used to have those, now they are deprecated though: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/__defineGetter__#examples https://developer.mozilla.org/en-US/docs/Web/JavaScript/Refe... so it settled on having this syntax for similar cases using "Symbol": class Foo { *[Symbol.iterator]() { yield 1; yield 2; yield 3; } } https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Symbol#static_properties https://developer.mozilla.org/en-US/docs/Web/JavaScript/Refe...