Practice Event Listener (Observer) - 17.2.3 | 17. Event-Driven Programming | Advanced Programming
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Practice Questions

Test your understanding with targeted questions related to the topic.

Question 1

Easy

What is an event listener?

💡 Hint: Think about user interactions in an application.

Question 2

Easy

What is a callback function?

💡 Hint: What happens when you click a button?

Practice 4 more questions and get performance evaluation

Interactive Quizzes

Engage in quick quizzes to reinforce what you've learned and check your comprehension.

Question 1

What is the primary function of an event listener?

  • To initiate an event
  • To respond to an event
  • To stop an event

💡 Hint: Think about what happens after an event occurs.

Question 2

True or False: Event listeners can only be used in web applications.

  • True
  • False

💡 Hint: Consider different programming languages and platforms.

Solve and get performance evaluation

Challenge Problems

Push your limits with challenges.

Question 1

Design an event listener in JavaScript that changes the background color of a webpage when a button is clicked. Provide both the HTML and JavaScript.

💡 Hint: Think about how to connect the button and the event action.

Question 2

Write a small Python Tkinter application with a button that uses an event listener to print a message when clicked.

💡 Hint: Remember to set up the main loop for the GUI.

Challenge and get performance evaluation