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HTML 

              
                <!-- 
  STEP 1
  Include the password control JS somewhere on your page, 
  then add the enz-enable attribute to your password 
  input element.
-->
<script type="text/javascript" 
        src="https://cdn.enzoic.com/js/enzoic.min.js">
</script>

<h4 class="text-center">
  Example Signup Form Using Enzoic
</h4>

<p class="text-center offset-1">
  Highlight the "Choose a Password" field to see the Password Strength Meter in action.
</p>

<form id="signupForm" 
      action="https://cdn.enzoic.com/demosignupsuccess.html" 
      class="offset-4 demo-form pp-container text-center">
  <fieldset>
    
    <!-- email address field -->
    <div class="row">
      <div class="col-md-12">
        <input type="text" placeholder="Your Email Address" />
      </div>
    </div>
    
    <div class="row">
      <!-- password field -->    
      <div class="col-md-6">
        <!-- 
          STEP 2
          To add Enzoic meter to this input, 
          add the enz-enable attribute to the markup.
          Other "enz-" attributes can be used for further 
          customization.
        -->
        <input type="password" 
               name="password" 
               placeholder="Choose a Password" 
               enz-enable 
               enz-theme="default"
               enz-min-password-strength="4" 
               enz-css-success-class="enz-success" 
               enz-css-fail-class="enz-fail" />
      </div>
      
      <!-- confirm password field -->    
      <div class="col-md-6">
        <input type="password" 
               placeholder="Confirm Password" />
      </div>
    </div>
   
    <!-- submit button -->
    <div class="btn-group text-center">
      <button type="submit" 
              class="btn btn-md btn-primary">
        Test Submit
      </button>
      
      <p class="offset-1 small">
        This is an example to show the Password Strength Meter in action.<br />
        You're not signing up for an account.
      </p>
    </div>
    
    <!-- simple toast for validation messaging to user -->
    <div id="resultToast" class="result-toast">
      <span class="loader"></span>
      <span id="resultToastMsg" class="msg">...</span>
    </div>
    
  </fieldset>
</form>
!

CSS 

              
                /* 
   Example usage of the Enzoic CSS classes to show visual 
   indicators for password acceptability.  The enz-success 
   and enz-fail CSS classes get added automatically to 
   the password input control when a password is classified 
   by Enzoic.  See the documentation for more details.
*/

input.enz-fail {
  border-color: #b94a48 !important;
  background: url(https://cdn.enzoic.com/images/warning.png) 
    right 5px center no-repeat;
}

input.enz-success {
  border-color: #32cd32 !important;
}
!

JS 

              
                /* handler for the signup form's onsubmit event */
function onSignupFormSubmit() {
  /*
    Decide what your minimum allowable password 
    score is and disallow if less.  You can check 
    the current score using the CurrentPasswordScore 
    property.
  */
  if (Enzoic.currentPasswordScore < 
      Enzoic.PASSWORD_STRENGTH.Strong) {
    showToast("Entered password is not strong enough.");
    return false;
  }

  return true;
}

function showToast(msg) {
  var toastEl = document.getElementById("resultToast");
  var toastMsg = document.getElementById("resultToastMsg");
  toastMsg.innerHTML = msg;
  toastEl.className += " fail";

  // hide toast
  setTimeout(hideToast, 2000);
}

function hideToast() {
  var toastEl = document.getElementById("resultToast");

  toastEl.className = toastEl.className.replace("fail", "");
}

document.getElementById("signupForm").onsubmit = onSignupFormSubmit;
!
999px

Console