The Modern JavaScript Bootcamp (2019) - Exploring Number Methods

The video tutorial covers number methods in JavaScript, focusing on the 'toFixed' method for formatting numbers. It introduces the Math object, explaining methods like 'round', 'floor', and 'ceiling'. The tutorial also demonstrates generating random numbers using 'Math.random', including a practical example of creating a guessing game. The video emphasizes the limited number of useful number methods compared to strings and highlights the Math object's utility for mathematical operations.

What is the primary use of the twoFixed method in JavaScript?

• To convert a number to a string

• To specify the number of decimal places

• To generate a random number

• To round a number to the nearest integer

Which method would you use to round a number to the nearest integer in JavaScript?

• Math.floor

• Math.round

• Math.random

• Math.ceil

What does the Math.floor method do?

• Generates a random number

• Rounds a number up to the nearest integer

• Rounds a number down to the nearest integer

• Formats a number to a fixed number of decimal places

Which method would you use to always round a number up?

• Math.round

• Math.floor

• Math.random

• Math.ceil

How does Math.random generate numbers?

• Between 0 and 1, inclusive

• Between 0 and 1, exclusive

• Between 0 and 10, inclusive

• Between 0 and 10, exclusive

What is the purpose of multiplying Math.random by (max - min) in the random number formula?

• To shift the range of numbers

• To round the number

• To convert the number to a string

• To scale the range of numbers

What is the result of Math.random() * (max - min) + min?

• An error

• A fixed number

• A random number between min and max

• A random number between 0 and 1

In the guessing game challenge, what is the range of numbers generated?

• Between 1 and 5

• Between 0 and 10

• Between 10 and 20

• Between 0 and 1

What is the expected output if the guess matches the random number in the guessing game?

• An error message

• True

• A random number

• False

What is the next topic to be covered after number methods and the guessing game?

• Function creation

• Array manipulation

• Variable definition

• String methods