AWS, JavaScript, React - Deploy Web Apps on the Cloud - JavaScript Math Round Function

The video tutorial explains how to use the Math.round function in JavaScript to round numbers to the nearest integer. It demonstrates rounding 15.4 down to 15 and 15.6 up to 16. The tutorial also covers how to use Math.ceil and Math.floor to explicitly round numbers up or down, respectively. Examples are shown in a web browser to confirm the results.

What is the result of using math.round on the number 15.4?

• 14

• 16

• 15

• 15.5

Which function would you use to always round a number down to the nearest integer?

• math.round

• math.ceil

• math.floor

• math.trunc

If you want to round 15.6 up to the nearest integer, which function should you use?

• math.round

• math.trunc

• math.floor

• math.ceil

What will be the result of math.floor applied to 15.6?

• 16

• 15

• 14

• 15.5

Using math.ceil, what will 15.6 be rounded to?

• 17

• 15.5

• 16

• 15