this

dotnotation

function talk () {
	return `I am ${this.name}`
}

const me = {
	name : `rami`,
    age : 32,
    talk
}

const you = {
	name : `hey`,
    age : 1,
    talk
}

me.talk(); //I am rami
you.talk(); //I am hey

https://www.youtube.com/watch?v=fVXp7ZWjlO4