JavaScript Math (Arithmetic)Object

The purpose of the Math (Arithmetic) object is to perform common arithmetic tasks.

Online Examples

round()
How to use round().

random()
How to use random() to return a random number between 0 and 1.

max()
How to use max() to return the larger of two given numbers. (Before ECMASCript v3, this method only had two parameters.)

min()
How to use min() to return the smaller of two given numbers. (Before ECMASCript v3, this method only had two parameters.)

Complete Math Object Reference Manual

We providethe reference manual for the JavaScript Math object, which includes all properties and methods available for the arithmetic object.

This manual contains detailed descriptions of each property and method along with related examples.

Math Object

The purpose of the Math (Arithmetic) object is to perform ordinary arithmetic tasks.

The Math object provides various arithmetic value types and functions. There is no need to define this object before using it.

Syntax for using Math properties/methods:

Note:The Math object does not need to be defined before using it.

Arithmetic Values

JavaScript provides 8 arithmetic values that can be accessed by the Math object:

You can refer to the following ways to use Javascript constants:

Arithmetic Methods

In addition to the arithmetic values that can be accessed by the Math object, there are also several functions (methods) that can be used.

The following example uses the round method of the Math object to round a number.

document.write(Math.round(4.7));

The output of the above code is:

5

The following example uses the random() method of the Math object to return a random number between 0 and 1:

document.write(Math.random());

The output of the above code is:

The following example uses the floor() method and random() of the Math object to return a random number between 0 and 11:

document.write(Math.floor(Math.random()*11));

The output of the above code is: