Picking a character from a string randomly

swatward · 08-12-2005, 06:57 PM

Ok, if i have this code below, how do i pick a letter out of the string pass randomly?

Code:

<script>
var len = prompt("number of letters","")
var z = 0
while (z != len)
{
var pass="abcdefghijklmnopqrstuvwxyz1234567890"
var blank=''
var x = Math.floor(Math.random()*pass.length)

z++
}
</script>
</body></html>

leonscape · 08-12-2005, 07:13 PM

Do you mean something like this?

Code:

<script>
var len = prompt("number of letters","");
var str = '';
var pass="abcdefghijklmnopqrstuvwxyz1234567890";
var passLen = pass.length - 1;
for( var z = 0; z < len; ++z )
{
   str += pass.charAt( Math.floor( Math.random() * passLen ) );
}
alert( 'Random string created is: ' + str );
</script>

swatward · 08-14-2005, 01:21 AM

yeah, thanks a lot, i actually ended up using substring and that made it easy for me, thanks.