Working with Checkboxes, Radio Buttons, and Dropdowns

What accessibility enhancement does this code provide?

select.addEventListener('keydown', e => {
  if (e.key === 'Enter' && select.multiple) {
    e.preventDefault();
    const option = select.options[select.selectedIndex];
    option.selected = !option.selected;
  }
});

Visual feedback
Keyboard selection toggle
This code enhances keyboard accessibility for multiple select elements. Features: 1) Allows toggling individual options with Enter key, similar to checkbox behavior, 2) Prevents form submission when pressing Enter, 3) Works alongside existing Ctrl/Cmd+click functionality, 4) Makes multiple select elements more intuitive for keyboard users. This pattern brings multiple select behavior closer to checkbox group behavior, improving usability for keyboard-only users.
Screen reader support
Focus management

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