<script language="javascript" type="text/javascript"> function random_all() { var campur = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXTZabcdefghiklmnopqrstuvwxyz"; var panjang = 9; var random_all = ''; for (var i=0; i<panjang; i++) { var hasil = Math.floor(Math.random() * campur.length); random_all += campur.substring(hasil,hasil+1); } document.random_form.disini.value = random_all; } </script> <form name="random_form"> <input onclick="random_all();" type="button" value="Generate Password" /> <br /><br /><br /><input name="disini" type="text" value="" /> </form>