What is the best way to return a value in javascript

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Javascript

ES6

I am practicing classes in javascript, in java I can use getters and setters. Ive tried that in Javascript but I am sure if I am doing it right. Any advice ya could give me would be great.

class Geolocation {
	constructor() {
		navigator.geolocation.getCurrentPosition(this.setCurrentPosition.bind(this));
		this.latitude = 0;
	}

	setCurrentPosition(position) {
		this.setLatitude(position.coords.latitude);
	}

	setLatitude(latitude) {
		this.latitude = latitude;
	}

	getLatitude() {
		return this.latitude;
	}
}

What I have tried:

I have tried setting both the lat and long to an array and assigning the index to

this.latitude

, and calling the getter.