Prevent submit

by Artem

HTML

<form action="">
  <input type="text">
  <button type="submit">Submit</button>
</form>

JavaScript

document.forms[0].onsubmit = (e) => {
  e.preventDefault();

  if (document.activeElement instanceof HTMLInputElement) {
    console.log('Prevent submit');
  } else {
    console.log('Submit the form');
  }
};