JavaScript Context (this) explained by Brad Schiff

codeswing.json

{"scripts": [],"showConsole": true}

script.js

let person = {
  firstName: 'Steve',
  lastName: 'Smith',
  driveCar() {
    function iAmAFunctionNotAMethod() {
      console.log(this); // this === window
    }
    iAmAFunctionNotAMethod();

    console.log(`${this.firstName} ${this.lastName} is driving a car.`); // this === person
  },
};

person.driveCar();

function breathe() {
  console.log(`${this.firstName} ${this.lastName} just inhaled and exhaled.`);
}

breathe.call(person); // this === person