dom events

Question 1

Why do we log things to the console?

Answer 1

To observe things

Question 2

What is the purpose of events and event handling?

Answer 2

To control behavior for certain events

Question 3

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

Answer 3

No, there are some functions that have optional parameters

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

myElement.addEventListener()

Question 5

What is a callback function?

Answer 5

a function taken as an argument of another function and is invoked inside that function. syntax is:
callback(params);
where callback is the literal word being used

Question 6

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

Answer 6

the object receiving the notification when the even occurs

Question 7

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

Answer 7

it is the property of the event that is the element being interacted with
you can check with console.log(event.target);
console

Question 8

What is the difference between these two snippets of code?

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

Answer 8

the first will wait for the notification to run

the second will immediately run