what is the difference between Math.floor, Math.round, Math.ceil in JavaScript?

Question

I'm completely new to JavaScript. I'm confused to determine the difference between these Math Objects.
Hope you'll help me & thanks in advance...

Answer 1

Let's take a a value 2.3

So math floor objects are used round a particular value downwards to the nearest integer.

• so Math.floor(2.3) gives the value 2.0
[if we take a value 2.8 then also Math.floor(2.3) is 2]

Math.round() rounds a particular number to the nearest integer.

•So Math.round(2.3) gives 2 as a a result.
[If we have a value 7.8 then Math.round(7.8) will be 8] - it will round to the nearest integer

Math.ceil() rounds of a particular number upwards to the nearest integer.

• Math.ceil(2.3) gives the result as 3
[ If we take a value 4.9 then Math.ceil(4.9) gives a value 5]
Must be more than the actual value.

More examples -
1. Math.ceil(2.3) = 3
2. Math.round(2.4)=2
3.Math.round(4.7)=5
4.Math.floor(2.7)=2
5.Math.floor(3.1)=3
6.Math.ceil(6.8) = 7

Answer 2

Ok Abir Sheikh
Math.round just round the value.
Means if decimal will be 4 or less than 4 it will be round down.
Ex. Math.round(3.2) == 3
Math.round(3.4) == 3

If decimal will be 5 or greater than 5 then it will be round up.
Ex. Math.round(3.5) == 4
Math.round(3.8) == 5

Lets take more examples of math.round.
8.1 == 8
8.2 == 8
8.3 == 8
8.4 == 8
8.5 == 9
8.6 == 9
8.7 == 9
8.8 == 9
8.9 == 9

Hope now you will understand

Answer 3

Math.floor rounds down the value.
Ex. Math.floor(5.8) == 5

Math.round rounds the value.
Ex. Math.round(5.4) == 5
Math.round(5.7) == 6

Math.ceil rounds up the value.
Ex. Math.ceil(5.2) == 6

Hope you will understand

Answer 4

You can reach this

https://www.sololearn.com/learn/JavaScript/1243/?ref=app

Answer 5

Abir Sheikh dost it is very simple.
Lets learn with an example.

1. Math.floor

It return previous number then actual number when the number is in decimal.

Eg. Math.floor (5.3) ==5
Eg. Math.floor (5.9) == 5

2. Math.round
It rounds value, it returns next number then the actual when decimals is more than or equal to 0.5

Eg. Math.round(5.5) ==6
Eg. Math.round (5.8) == 6

It return previous number then the actual number when decimals is less or equal to 0.49.

Eg. Math.round (5.4) ==4
Eg. Math.round (5.2) == 4

3. Math.ceil

It returns next number then the actual number when the number is in decimal.

Eg. Math.ceil(5.3) ==6
Eg.Math.ceil (5.7) ==6

I hope you understood. Plz tell me if still have doubt

Answer 6

Nilesh please explain in words...
I'm confused cause, they look like same 🙄🙄🙄

Answer 7

Priyanshi💞 sorry, but I didn't😓😓😓...
I understood Math.floor & Math.ceil but I didn't understand Math.round !

Answer 8

Priyanshi💞 Nilesh Thanks A Lot...

Answer 9

Himanshu Shah Yes Bro, It's clear now..
Thanks 😊😊😊

Answer 10

Math.floor truncates the figure while math.round doe the usual rounding off

Answer 11

leer las preguntas