1<script language="javascript">
2    function passwordChanged() {
3        var strength = document.getElementById('strength');
4        var strongRegex = new RegExp("^(?=.{14,})(?=.*[A-Z])(?=.*[a-z])(?=.*[0-9])(?=.*\\W).*$", "g");
5        var mediumRegex = new RegExp("^(?=.{10,})(((?=.*[A-Z])(?=.*[a-z]))|((?=.*[A-Z])(?=.*[0-9]))|((?=.*[a-z])(?=.*[0-9]))).*$", "g");
6        var enoughRegex = new RegExp("(?=.{8,}).*", "g");
7        var pwd = document.getElementById("password");
8        if (pwd.value.length == 0) {
9            strength.innerHTML = 'Type Password';
10        } else if (false == enoughRegex.test(pwd.value)) {
11            strength.innerHTML = 'More Characters';
12        } else if (strongRegex.test(pwd.value)) {
13            strength.innerHTML = '<span style="color:green">Strong!</span>';
14        } else if (mediumRegex.test(pwd.value)) {
15            strength.innerHTML = '<span style="color:orange">Medium!</span>';
16        } else {
17            strength.innerHTML = '<span style="color:red">Weak!</span>';
18        }
19    }
20</script>
21<input name="password" id="password" type="text" size="15" maxlength="100" onkeyup="return passwordChanged();" />
22<span id="strength">Type Password</span>