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JavaScript JavaScript Basics (Retired) Working With Numbers Review Numbers and the Math Object

Stephen Parker
Stephen Parker
7,158 Points
Posted by Stephen Parker
Stephen Parker
7,158 Points

Does that mean that console.log( math.round(3.9)); rounds to 4?

It says if it is under .5 then it will round to 3, but does not clarify if it will go up to 4 or just stay at 3.9

2 Answers

andren
andren
28,558 Points
andren
andren
28,558 Points

The MDN definition of Math.round states:

The Math.round() function returns the value of a number rounded to the nearest integer.

Integers are whole numbers, so anything below 3.5 would become 3, anything above would become 4.

Amber Cyr
Amber Cyr
19,699 Points
Amber Cyr
Amber Cyr
19,699 Points

To add to Andren's answer, there is also a function Math.floor() that rounds the number to the largest integer less than or equal to the number, so Math.floor(3.9) will give you 3.

Just thought I would point this out in case Math.floor() is better suited for your needs.