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<!DOCTYPE html> <html> <body> <h2>JavaScript Functions</h2> <p>This example calls the fullName method of person, using it on person1: </p> <p id="demo"></p> <script> const person = { fullName: function(city, country) { return this.firstName + " " + this.lastName + "," + city + "," + country; } } const person1 = { firstName:"John", lastName: "Doe" } const person2 = { firstName:"Mary", lastName: "Doe" } document.getElementById("demo").innerHTML = person.fullName.call(person1, "Oslo", "Norway"); </script> </body> </html>