specific characters in passwords

[charter]

I have a made a basic script for password protection but I wish to have added features. Can anyone please help.

It must contain at least one number character
It must contain at least one upper case character
It must contain at least one lower case character
It must be at least 5 but not more than 14 characters long.

Anyone know how to script for this and where it should be put as it must be used with the prompt dialogue.

All help much appreciated.

[Philip M]

Here we go!


function testpassword(password) {
var flag=0;
var pwdlength = password.length;
if(/\d/.test(password)) { flag++} // password contains a digit
if(/[A-Z]/.test(password)) { flag++} // password contains an uppercase letter
if(/[a-z]/.test(password)) { flag++} // password contains a lowercase letter
if (pwdlength >4 && pwdlength <15 {flag++} // password is 5-14 chars in length
if (flag == 4) { // all four conditions met so OK ......................
alert ("Your password passes!);
return true;
}
alert ("Invalid password - try again!");
password.focus();
return false;
}

<form>
<input type="password" size="15" maxlength="14" name="UserPwd" onchange="testpassword(this)">
</form>