regex Patterns for Password Strength

password-strength.js

// STRONG PASSWORD
// Must have capital letter, numbers and lowercase letters  
var strongRegex = new RegExp("^(?=.{8,})(?=.*[A-Z])(?=.*[a-z])(?=.*[0-9])(?=.*\\W).*$", "g");

// MEDIUM PASSWORD
// Must have either capitals and lowercase letters or lowercase and numbers  
var mediumRegex = new RegExp("^(?=.{7,})(((?=.*[A-Z])(?=.*[a-z]))|((?=.*[A-Z])(?=.*[0-9]))|((?=.*[a-z])(?=.*[0-9]))).*$", "g");

// WEAK PASSWORD
// Must be at least 6 characters long  
var okRegex = new RegExp("(?=.{6,}).*", "g");