DOM Events

Question 1

Why do we log things to the console?

Answer 1

To test and debug our code

Question 2

What is the purpose of events and event handling?

Answer 2

It is useful in triggering code

Question 3

Are all possible parameters required to use a JavaScript method or function?

Answer 3

No

Question 4

What method of element objects lets you set up a function to be called when a specific type of event occurs?

Answer 4

addEventListener

Question 5

What is a callback function?

Answer 5

It is a function passed in as an argument for another function

Question 6

What object is passed into an event listener callback when the event fires?

Answer 6

The event object

Question 7

What is the event.targer? If you weren’t sure, how would you check? Where could you get more information about it?

Answer 7

The element that the event targeted

Question 8

What is the difference between these two snippets of code?

element. addEventListener(‘click’, handleClick)
element. addEventListener(‘click’, handleClick())

Answer 8

The first is calling the function and the second is defining a new function