Download the Simple Password Strength Checker Script developed in JQuery. Password Strength checker is very useful script for websites that allow user registration with password fields. It let’s you know the intensity of your password, whether it is weak or strong. If it is weak, you need to modify and make it stronger.
There is no submit button. Just fill in the password field to check password strength. This script supports all modern browsers. Integration of this script to any website is very easy. Considering that password security is an extremely important factor in a register, it's easy to see the utility of this tool.