Need regular expression

Please see my solution (2), whether it works for you.

no it is not working

I have checked it. It is working. Please give your test string. So that I will also test. Thank you.

function passwordChanged() {
var strength = document.getElementById('strength');
//var strongRegex = new RegExp("^(?=.{8,})(?=.*[A-Z])(?=.*[a-z])(?=.*[0-9])(?=.*\\W).*$", "g");
//var mediumRegex = new RegExp("^(?=.{7,})(((?=.*[A-Z])(?=.*[a-z]))|((?=.*[A-Z])(?=.*[0-9]))|((?=.*[a-z])(?=.*[0-9]))).*$", "g");
//var enoughRegex = new RegExp("(?=.{6,}).*", "g");
var last = new RegExp("(?(?=^[a-z0-9]{8,16}$)(?(?=^.*\d{1}.*\d{1}.*$)(?(?=^.*[a-z]{1}.*[a-z]{1}.*$)^[a-z0-9]{8,16}$)))");
var pwd = document.getElementById("pwdPassword");
if (pwd.value.length==0) {
strength.innerHTML = 'Type Password';
//} else if (false == enoughRegex.test(pwd.value)) {
//strength.innerHTML = 'More Characters';
//} else if (strongRegex.test(pwd.value)) {
//strength.innerHTML = '<span style="color:green">Strong!</span>';
//} else if (mediumRegex.test(pwd.value)) {
//strength.innerHTML = '<span style="color:orange">Medium!</span>';
//}
}
else if (last.test(pwd.value)) {
strength.innerHTML = '<span style="color:orange">Medium!</span>';
}
else {
strength.innerHTML = '<span style="color:red">Weak!</span>';
}

}

Can you provide some test string to test for.

You have to put @ in front of pattern, as @"(?......