VBScript Rnd function
May 13, 2021 VBScript
Table of contents
VBScript Rnd function
Complete VBScript reference manual
The Rnd function returns a random number. The number is always less than 1 but greater than or equal to 0.
Grammar
Rnd[(number)]
| parameter | describe |
|---|---|
| number |
Optional.Effective numerical expression.
If the number is:
|
Instance 1
Random number:
<script type="text/vbscript">
document.write(Rnd)
</script>
document.write(Rnd)
</script>
Note that you get the same number every time. To avoid this, use the Randomize statement in Instance 2.
The above example output results:
0.7055475
Try it out . . .
Instance 2
To avoid getting the same number every time as in Instance 1, use the Randomize statement:
<script type="text/vbscript">
Randomize
document.write(Rnd)
</script>
Randomize
document.write(Rnd)
</script>
The above example output results:
0.4758112
Try it out . . .
Instance 3
Here's how to produce random integers in a given range:
<script type="text/vbscript">
Dim max,min
max=100
min=1
Randomize
document.write(Int((max-min+1)*Rnd+min))
</script>
Dim max,min
max=100
min=1
Randomize
document.write(Int((max-min+1)*Rnd+min))
</script>
The above example output results:
71
Try it out . . .
Complete VBScript reference manual