HTML CSS and JavaScript for Beginners - A Web Design Course - Select Multiple Elements

This video tutorial explains how to select multiple elements using JavaScript's querySelectorAll, iterate through them using loops, and attach event listeners. It demonstrates toggling classes on elements and understanding the return values of toggle operations. The tutorial also covers the use of named functions for better reusability in code.

What method is used to select all occurrences of list items on a page?

• getElementById

• querySelectorAll

• getElementsByClassName

• querySelector

What property is used to determine the number of elements selected?

• count

• size

• total

• length

Which keyword in JavaScript is used to refer to the currently clicked element?

• current

• element

• this

• self

What happens when you toggle a class on an element?

• The class is permanently added

• The class is permanently removed

• The class is added or removed based on its current state

• The class is duplicated

What value is returned when a class is successfully toggled on an element?

• false

• true

• undefined

• null

What is a benefit of using named functions over anonymous functions?

• They are faster

• They offer better reusability

• They are easier to write

• They use less memory

Why might you choose to use a named function in an event listener?

• To make the code more secure

• To allow the function to be reused in multiple places

• To make the code run faster

• To reduce the file size