dom-manipulation

Question 1

What is the className property of element objects?

Answer 1

The className property sets or returns the class name of an element (the value of an element’s class attribute).

Question 2

How do you update the CSS class attribute of an element using JavaScript?

Answer 2

-re-assign the class name using the className property

Question 3

What is the textContent property of element objects?

Answer 3

The textContent property allows you to collect or update just the text that is in the containing element (and its children).

Question 4

How do you update the text within an element using JavaScript?

Answer 4

-re-assign the text using the textContent

Question 5

Is the event parameter of an event listener callback always useful?

Answer 5

-no

Question 6

Would this assignment be simpler or more complicated if we didn’t use a variable to keep track of the number of clicks?

Answer 6

-more complicated

Question 7

Why is storing information about a program in variables better than only storing it in the DOM?

Answer 7

-it is faster