The Art of Doing - Web Development for Beginners - Functions

This video tutorial covers the basics of writing and using functions in JavaScript. It begins with an introduction to function declarations, followed by examples of functions with parameters and return values. The tutorial also addresses handling data types and using built-in functions like Math.random and Math.floor to generate random numbers. Key concepts such as parsing strings to integers and using the Math library are discussed, providing a comprehensive overview of JavaScript functions.

What is the purpose of using the 'defer' attribute in the script tag?

• To load the script before the HTML content

• To load the script in a separate window

• To load the script only when the user clicks a button

• To load the script after the HTML content is fully loaded

Which keyword is used to declare a function in JavaScript?

• def

• function

• create

• declare

What will be the output of calling a function that logs 'Hello World' and 'Have a great day'?

• Hello World

• Have a great day

• Hello World and Have a great day

• No output

How do you pass arguments to a function in JavaScript?

• By listing them inside parentheses

• By listing them inside square brackets

• By using the 'args' keyword

• By using the 'pass' keyword

What is the correct order of passing arguments to a function?

• Alphabetical order

• Reverse order

• The order in which they are declared

• Any order

What does the 'return' statement do in a function?

• Stops the function and returns a value

• Continues the function without returning a value

• Pauses the function temporarily

• Restarts the function

Why is it necessary to convert user input from a prompt to an integer?

• Because prompt always returns a string

• Because prompt always returns a boolean

• Because prompt always returns an object

• Because prompt always returns a number

Which function is used to convert a string to an integer in JavaScript?

• parseInt

• toInteger

• parseString

• convertToInt

What does Math.random() return?

• A random boolean

• A random string

• A random floating-point number between 0 and 1

• A random integer between 0 and 10

How can you convert a floating-point number to an integer in JavaScript?

• Using Math.round()

• Using Math.ceil()

• Using Math.floor()

• Using Math.int()