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VBScript Rnd Function

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The Rnd function returns a random number. The number is always less than 1 but greater or equal to 0.

Syntax

Rnd[(number)]

Parameter Description
number Optional. A valid numeric expression

If number is:

  • <0 - Rnd returns the same number every time
  • >0 - Rnd returns the next random number in the sequence
  • =0 - Rnd returns the most recently generated number
  • Not supplied - Rnd returns the next random number in the sequence

Example 1

document.write(Rnd)

Output:

0.7055475

Example 2

'If you refresh the page,
'using the code in example 1,
'the SAME random number will show over and over.
'Use the Randomize statement generate a new random number
'each time the page is reloaded!

Randomize
document.write(Rnd)

Output:

0.4758112

Example 3

'Here is how to produce random integers in a
'given range:

Dim max,min
max=100
min=1
document.write(Int((max-min+1)*Rnd+min))

Output:

71

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