js timers

Question 1

What is a “callback” function?

Answer 1

Function that is passed into another function as an argument and is invoked outside of that function

Question 2

Besides adding an event listener callback function to an element or the document, what is one way to delay the execution of a JavaScript function until some point in the future?

Answer 2

using timers like setTimeout();

Question 3

How can you set up a function to be called repeatedly without using a loop?

Answer 3

using interval()

Question 4

What is the default time delay if you omit the delay parameter from setTimeout() or setInterval()?

Answer 4

0 milliseconds (immediate)

Question 5

What do setTimeout() and setInterval() return?

Answer 5

positive integer value that identifies the created timer