dom manipulation

Question 1

What is the className property of element objects?

Answer 1

It is a string that represents all the classes the element has

Question 2

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

Answer 2

using myElement.className and reassigning it

Question 3

What is the textContent property of element objects?

Answer 3

It is a string that represents the text content of an element

Question 4

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

Answer 4

using myElement.textContent and reassigning it

Question 5

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

Answer 5

Only when you want to access the properties of that object

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 because then you would have to manually change the strings

Question 7

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

Answer 7

It allows it to be more flexible