A more complex call and apply example in JavaScript

js-call-apply-complex.js

const Example = {
  name: "Hans",
  age: 42,
  print: function() {
    console.log(`Name: "${this.name}", age: "${this.age}".`);
  },
  printSomething: function(extra) {
    console.log(`Extra: ${extra}.`);
  }
};

Example.print();
// ⇒ Name: "Hans", age: "42".

Example.print.apply(null /* or undefined */, []);
// ⇒ Name: "undefined", age: "undefined".

Example.print.call(null /* or undefined */, []);
// ⇒ Name: "undefined", age: "undefined".

Example.print.apply(Example, []);
// ⇒ Name: "Hans", age: "42".

Example.print.apply({ name: "Marius", age: 15 }, []);
// ⇒ Name: "Marius", age: "15".

Example.printSomething.apply(null, [ '"@reime005"' ]);
// ⇒ Extra: "@reime005".

Example.printSomething.call(null, '"@reime005"', "not used");
// ⇒ Extra: "@reime005".