This section provides a tutorial example on how to use 'while' statements to repeat a block of statements.
To help you understand how "While" statements work, I wrote the following the example, loop_while.html:
<html>
<body>
<!-- loop_while.html
- Copyright (c) 2015, HerongYang.com, All Rights Reserved.
-->
<pre>
<script language="vbscript">
document.writeln("")
i = 3
While i <= 30
bIsPrime = True
j = 2
While j <= i\2 And bIsPrime
bIsPrime = i Mod j > 0
j = j + 1
Wend
If bIsPrime Then
document.writeln("Found a prime number: " & i)
End If
i = i + 2
Wend
</script>
</pre>
</body>
</html>
Here is the output:
Found a prime number: 3
Found a prime number: 5
Found a prime number: 7
Found a prime number: 11
Found a prime number: 13
Found a prime number: 17
Found a prime number: 19
Found a prime number: 23
Found a prime number: 29