Why is another event fired?

Question

JavaScript

Why, in the example, does another event fire? How to turn it off?
Open the console, stand on input and press Enter.
In the console it is not written <button>Добавить</button>, but there was no click on the "Add" button.

Example code

<form action="" onsubmit="return false">
  <table>
    <thead><tr><td>Наименование</td><td>Цена</td></tr></thead>
    <tbody>
      <tr>
        <td><input type="text"></td>
        <td><input type="text"></td>
      </tr>
    </tbody>
  </table>

  <button>Добавить</button>    
</form>

window.addEventListener('click', selected, false);
function selected(e) {
  e.preventDefault(); 
  e.stopImmediatePropagation();
  
  if ( e.target.tagName == 'BUTTON' ) console.log(e.target);
}

Answer 1

You need to add type="button"a button.