What is a “callback” function?
a function within a function
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?
set timeout()
How can you set up a function to be called repeatedly without using a loop?
set Interval ()
What is the default time delay if you omit the delay parameter from setTimeout() or setInterval()?
0
What do setTimeout() and setInterval() return?
set time out returns a number, an id for interval id to stop the function from running