JavaScript Math.random() Method

Math.random()The method returns a random number, ranging from 0 (including) to1（but not including）.

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

Syntax:

Math.random()

Example

Math.random();

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

Method
Math.random()	Is	Is	Is	Is	Is

Return value:	Between 0 (including) and1Floating-point pseudo-random numbers between (excluding):
JavaScript version:	ECMAScript 1

Return1to10Random number between:

Example

Math.floor((Math.random()　*　10)　+　1);

Return11to2Random number between 0:

Example

Math.floor((Math.random()　*　10)　+　11);

Return the random number of mouse movement:

Move the mouse pointer to the following DIV:

Hover the mouse over me!!!!

0.4194069268886713