`Math.floor()`

Rounds a number down to the largest integer less than or equal to it.

Syntax

Math.floor(x)

Name	Type	Required	Description
`x`	`number`	Yes	The number to round down.

number — The largest integer less than or equal to x.

console.log(Math.floor(4.7), Math.floor(4.0));

Output

4 4

console.log(Math.floor(-4.1));

Output

-5

Rounds toward negative infinity, so `Math.floor(-4.1)` is -5. For truncation toward zero use `Math.trunc` instead.