How to access Class properties outside of JavaScript Classes -

how sound property not private in javascript class? additionally, how can accessed outside class? saw in video , attempted access sound property outside class , not.

class dog {   constructor() {     this.sound = 'woof';   }   talk() {     console.log(this.sound);   } } 

thanks!!

it's not private because can access outside after creating instance of class.

class dog {    constructor() {      this.sound = 'woof';    }    talk() {      console.log(this.sound);    }  }    let dog = new dog();  console.log(dog.sound); // <--    // further drive point home, check out  // happens when change  dog.sound = 'meow?';  dog.talk();