call.js

function Preposition(name_init) {
	this.name = name_init;

	this.displayName = function() {
		console.log(`Preposition is ${this.name}`);
	}
}

let these = new Preposition("these");
these.displayName(); // Prints Preposition is these
let those = new Preposition("those");
those.displayName(); // Prints Preposition is those

these.displayName.call(those);  // // Prints:- Preposition is those