JSFiddle - React, Tailwind, and code Playground

HTML

<script src="https://unpkg.com/@edgeworkscreative/pwned-password@latest/dist/pwned-password.js"></script>
<form>
  <input type="email" name="email" placeholder="Email Address" autocomplete="email" />
  <pwned-password name="password" placeholder="Enter your password"></pwned-password>
  <input type="submit" value="Register" />
</form>

JavaScript

document.addEventListener('pwnedPasswordFound', (e) => {
  if (e.detail === 0) {
    let email =  e.srcElement.parentElement.querySelector('input[name="email"]').value;
    let password =  e.srcElement.querySelector('input').value;
    alert(`Password hasn't been pwned - submit your form`);
    console.log(email);
  } else {
    alert(`Password has been pwned [[${e.detail}]] times!`);
  }
});