Dom-Manipulation

Question 1

What is the className property of element objects?

Answer 1

1. string containing the value of the class attribute of that element.

Question 2

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

Answer 2

Using .className property

Question 3

What is the textContent property of element objects?

Answer 3

it is the property of an element that has text of that element.

Question 4

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

Answer 4

using the textContent property. we assign value using =

Question 5

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

Answer 5

It is not always useful. It is there for us if we 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 be unnecessary as it will take more steps.(More complicated).

Question 7

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

Answer 7

easier to access it (in the future) if we can store it in the variable.