The video tutorial explains how to define and use functions within a class in JavaScript. It focuses on creating a 'display' function to show passenger details, utilizing the 'this' keyword to access object properties. The tutorial demonstrates invoking methods on different objects and highlights the importance of understanding the 'this' context. Finally, it tests the code in a web browser, ensuring functionality without errors, and concludes with a summary of the learning objectives.

What is the purpose of defining a function within a class?

• To define global constants

• To perform operations unrelated to the class

• To manipulate global variables

• To use class data for meaningful operations

How do you replace console logs with class properties in the 'display' function?

• By using global variables

• By using 'this' keyword with class properties

• By using static methods

• By using external libraries

What is the correct way to invoke the 'display' function on a passenger object?

• Passenger.display{}

• Passenger.display()

• Passenger->display()

• display.Passenger()

What happens when you invoke the 'display' function on different passenger objects?

• It throws an error

• It displays information based on the object it is invoked on

• It requires additional parameters to work

• It displays the same information for all objects

What is the significance of the successful compilation and execution of the code?

• It means the code needs debugging

• It confirms that the function properties were added correctly

• It indicates syntax errors

• It shows that the function properties were not added correctly