How to randomize an integer variable using JavaScript?

Question

How can I randomize a variable in JavaScript between 0-4, so that every time the page loads the variable is different but between 0 and 4?

BalusC · Accepted Answer · 2010-07-07 17:58:43Z

6

You can use Math.random() for this. To get a (whole) number between 0 and 4 inclusive, use the following:

var random = Math.floor(Math.random() * 5);

answered Jul 7, 2010 at 17:58

BalusC

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1 Comment

David Over a year ago

Thank you for the fast reply's! Worked a charm!

gblazex · Accepted Answer · 2010-07-07 18:06:56Z

3

// Returns a random integer between min and max  
function getRandomInt(min, max)  
{  
  return Math.floor(Math.random() * (max - min + 1)) + min;  
}

from mdc (mozilla developer center)

answered Jul 7, 2010 at 18:06

gblazex

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2 Comments

BalusC Over a year ago

You missed the link in my answer? :)

gblazex Over a year ago

but fell in love with the typography, so can't delete now. But hey, people vote to BalusC :)

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