JavaScript Math.floor() Method

　JavaScript Math Object

TheMath.floor()The method returns the largest integer less than or equal to the given floating-point number.

If the passed parameter is an integer, the value will remain unchanged.

Since floor() is a static method of Math, you always use it asMath.floor(), rather than as a method of the Math object created.

Syntax:

Math.floor(x)

Math.floor(3.14);　　　//　3
Math.floor(.)95);//　0
Math.floor(5);　　//　5
Math.floor(-18);//　-18
Math.floor(-0.72);　　//　-1

Browser Compatibility

All browsers fully support the Math.floor() method:

Parameter Value

Technical Details

　JavaScript Math Object