easy-password.js

$(function() {
  $("input.zxcvbn").each(function() {
    var $pw = $(this);
    var $notify = $($pw.data("notify"));
    var $confirm = $($pw.data("confirm"));

    if ($notify[0]) {
      $pw.keyup(assess);
      $confirm.keyup(assess);
      assess();
    }

    function assess() {
      var pw = $pw.val();
      if (pw.length < 6) {
          $notify.html("Password must be at least 6 characters.");
      } else if (this != $pw[0] && $confirm[0] && 
          $confirm.val() && $confirm.val() != pw) {
          $notify.html("Passwords don’t match.");
      } else {
        if (typeof zxcvbn !== "undefined") {
           var z = zxcvbn(pw);
           var text = "Password " + (z.score !== 0 ? "quality " : "") + "is ";
           text += ["insecure","low","medium","good","fantastic"][z.score] + ".";
           $notify.html(text);
        }
      }
    }
});