Where are a JavaScript's class' instance methods stored? -

this question has answer here:

given:

var car = class car{     drive() {}     park(){} }

given car, how can find methods class has, ie "drive" , "park" ? have thought on

car.prototype

it's true

car.prototype.drive

returns method ,

car.prototype.hasownproperty("drive") => true

but

for(let prop_name in car.prototype){     console.log(prop_name) }

prints nothing.

the property not enumerable (car.prototype.propertyisenumerable("drive") === false), therefore doesn't show it. see mdn.

the for...in statement iterates on enumerable properties of object, in original insertion order

otherwise correct, function on prototype.

note not , instance method. instance method exists once per instance, name implies. can generate instance methods e.g. with

class car {   constructor() {     this.instancefunc = () => {};   } }

note here explicitly new car().instancefunc !== new car().instancefunc

How Y