Dom-Manipulation

Question 1

What is the className property of element objects?

Answer 1

The className propert of the element object allows you to update the value of the class attribute of the queryed element

Question 2

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

Answer 2

use the className property of a element node

Question 3

What is the textContent property of element objects?

Answer 3

the textContent property represents the text content within the specified element node and allows you to also update the text content.

Question 4

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

Answer 4

use the textContent property

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 can be accessed for later use.