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Math.random Last updated: 30. May 2026

Returns a number, decimal between 0 and 1.

See also: Math.floor Math.round Math.ceil

Parameters

This function takes no parameters

Returns

A floating-point number between 0 (inclusive) and 1 (exclusive).

Example

Code example (#JS)

#JS is mixed HTML (or other text file) with inline JavaScript with # starting and ending each inline statement. 
#Math.round(Math.random() * 100)#

Output

The #JS code above produces the output shown below: 
27