JavaScript Forms

Question 1

What event is fired when a user places their cursor in a form control?

Answer 1

focus

Question 2

What event is fired when a user’s cursor leaves a form control?

Answer 2

blur

Question 3

What event is fired as a user changes the value of a form control?

Answer 3

input

Question 4

What event is fired when a user clicks the “submit” button within a ?

Answer 4

submit

Question 5

What does the event.preventDefault() method do?

Answer 5

The Event interface’s preventDefault() method tells the user agent that if the event does not get explicitly handled, its default action should not be taken as it normally would be.

Question 6

What does submitting a form without event.preventDefault() do?

Answer 6

The browser automatically reloads the page with the form’s values in the URL.

Question 7

What property of a form element object contains all of the form’s controls.

Answer 7

elements

Question 8

What property of form a control object gets and sets its value?

Answer 8

.name

Question 9

What is one risk of writing a lot of code without checking to see if it works so far?

Answer 9

You don’t quite know where you messed up.

Question 10

What is an advantage of having your console open when writing a JavaScript program?

Answer 10

You can console.log elements and properties to see if you’re doing things properly.