Working with Checkboxes, Radio Buttons, and Dropdowns

What advanced checkbox interaction does this code implement?

checkbox.addEventListener('change', function(e) {
  const isExclusive = e.target.dataset.exclusive === 'true';
  if (isExclusive && e.target.checked) {
    checkboxes.forEach(cb => {
      if (cb !== e.target) cb.checked = false;
    });
  }
});

Basic checkbox validation
Checkbox synchronization
Mutually exclusive checkbox behavior
This code implements mutually exclusive behavior for checkboxes, similar to radio buttons but with the ability to uncheck. Uses include: 1) 'None of the above' options that should uncheck other options, 2) Options that are incompatible with others, 3) Custom form controls that need radio-like behavior but with unchecking ability. The data-exclusive attribute provides a declarative way to specify which checkboxes have this behavior, maintaining clean separation of concerns.
Checkbox state persistence

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