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JavaScript floor() Method

Math Object Reference JavaScript Math Object

Example

Round a number downward to its nearest integer:

Math.floor(1.6);

The output of the code above will be:

1

Try it yourself »


Definition and Usage

The floor() method rounds a number DOWNWARDS to the nearest integer, and returns the result.

If the passed argument is an integer, the value will not be rounded.


Browser Support

Internet Explorer Firefox Opera Google Chrome Safari

The floor() method is supported in all major browsers.


Syntax

Math.floor(x)

Parameter Values

Parameter Description
x Required. The number you want to round

Return Value

Type Description
Number The nearest integer when rounding downwards

Technical Details

JavaScript Version: 1.0


More Examples

Example

Use the floor() method on different numbers:

var a = Math.floor(0.60);
var b = Math.floor(0.40);
var c = Math.floor(5);
var d = Math.floor(5.1);
var e = Math.floor(-5.1);
var f = Math.floor(-5.9);

The result of a,b,c,d,e, and f will be:

0
0
5
5
-6
-6

Try it yourself »


Math Object Reference JavaScript Math Object

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