DOM Manipulation

Question 1

What is the className property of element objects?

Answer 1

It gets and sets the class attribute of an element

Question 2

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

Answer 2

element.className = newValue

Question 3

What is the textContent property of element objects?

Answer 3

The textContent property represents the text content of an element

Question 4

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

Answer 4

element.textContent = ‘newcontent’

Question 5

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

Answer 5

No because sometimes we do not need it

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

It would’ve been more complicated because then without it, we would have had to update the content with every loop

Question 7

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

Answer 7

It makes data more accessible and easier to use with JavaScript