-----------------------------------------------------------------------
FAQ Topic - How do I generate a random integer from 1 to
N?
-----------------------------------------------------------------------
` Math.random() ` returns a value ` R ` such that ` 0 <= R < 1.0 `; therefore:
// positive integer expected
function Random(j) {
return Math.floor(j * Math.random());
}
- gives an evenly distributed random integer in the range from
` 0 ` to ` x-1 ` inclusive; use ` Random(N)+1 ` for ` 1 ` to ` N `.
http://msdn2.microsoft.com/en-us/library/41336409.aspx
http://docs.sun.com/source/816-6408-10/math.htm
How to Deal and Shuffle, see in:
http://www.merlyn.demon.co.uk/js-randm.htm
--
Postings such as this are automatically sent once a day. Their
goal is to answer repeated questions, and to offer the content to
the community for continuous evaluation/improvement. The complete
comp.lang.javas cript FAQ is at http://jibbering.com/faq/index.html.
The FAQ workers are a group of volunteers. The sendings of these
daily posts are proficiently hosted by http://www.pair.com.