Many sites that require login credentials enforce a security setting often referred to as password complexity requirements. These requirements ensure that user passwords are sufficiently strong and cannot be easily broken.

What constitutes a strong password? Well, that depends on who you ask. However, traditional factors that contribute to a password’s strength include it’s length, complexity, and unpredictability. To ensure password strength, many sites require user passwords to be alphanumeric in addition to being a certain length.

In this tutorial, we’ll construct a form that gives the user live feedback as to whether their password has sufficiently met the complexity requirements we will establish.

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