JavaScript, HTML, and CSS Quiz

What does the alert() function do in JavaScript?

• Takes user input

• Displays a message box

• Prints to the console

• Reloads the page

Which method is used to take text input from the user?

• alert()

• confirm()

• prompt()

• log()

What is the return type of confirm() in JavaScript?

• String

• Number

• Boolean

• Object

Which of the following is a correct example of an arrow function?

• function() => {}

• () => {}

• function => () {}

• => function()

What will typeof "5" return in JavaScript?

• number

• string

• boolean

• undefined

Which operator is used to compare both value and type in JavaScript?

• =

• ==

• ===

• !=

What is the main purpose of the Document Object Model (DOM)?

• Styling HTML

• Designing images

• Representing and interacting with HTML elements

• Downloading pages

Which JavaScript method is used to select an element by ID?

• getElementByClass()

• getElementsByTag()

• getElementById()

• querySelectorAll()

What will document.querySelector("p") do?

• Select all

  elements

• Select the first

  element

• Remove

  tags

• Add a new paragraph

Which property is used to change the text inside an HTML element using JavaScript?

• textStyle

• innerHTML

• value

• style