this.js

##################
function foo () {
	console.log("Simple function call");
	console.log(this === window); 
}

foo();
console.log(this === window)
  
##################
function foo () {
	'use strict';
	console.log("Simple function call")
	console.log(this === window); 
}

foo();

##################
function Person(fn, ln) {
	this.first_name = fn;
	this.last_name = ln;

	this.displayName = function() {
		console.log(`Name: ${this.first_name} ${this.last_name}`);
	}
}

let person = new Person("John", "Reed");
person.displayName();

#################
function foo () {
	console.log("Simple function call")
	console.log(this === window);
}

let user = {
	count: 10,
	foo: foo,
	foo1: function() {
		console.log(this === window);
	}
}

user.foo()

let fun1 = user.foo1;
fun1()

user.foo1()

#######################
function Person(fn, ln) {
	this.first_name = fn;
	this.last_name = ln;

	this.displayName = function() {
		console.log(`Name: ${this.first_name} ${this.last_name}`);
	}
}

let person1 = new Person("John", "Reed");
let person2 = new Person("Paul", "Adams");

person1.displayName.bind(person2)();