Show message the password text box is weak or strong

Aprat from the previous solution you can check the below links also

1.Javascript Password Strength Validator
2. Check password strength: Javascript
3.10 Password Strength Meter Scripts For A Better Registration Interface

As per your requirement you can set weak, midium or strong in that password field

Take one criteria length.
weak >if password length is less than 4
medium>if password length is greater than 4 and less than 7
Strong >if password length is greater than 7

if($("#passwordId").length()<4)
{
   alert("Weak password");
}
else if($("#passwordId").length()>4 && $("#passwordId").length()<7)
{
   alert("medium password");
}
else
{
    alert("strong password");
}