根据在另一选择中选择的值禁用或启用选择选项

<select id="triggerSelect" onchange="updateOptions()">
  <option value="option1">Option 1</option>
  <option value="option2">Option 2</option>
</select>

<input type="checkbox" id="affectedCheckbox" disabled>

function updateOptions() {
  var triggerSelect = document.getElementById("triggerSelect");
  var affectedCheckbox = document.getElementById("affectedCheckbox");

  if (triggerSelect.value === "option1") {
    affectedCheckbox.disabled = true;
  } else if (triggerSelect.value === "option2") {
    affectedCheckbox.disabled = false;
  }
}

<select id="triggerSelect" onchange="updateOptions()">
  <option value="option1">Option 1</option>
  <option value="option2">Option 2</option>
</select>

<input type="checkbox" id="affectedCheckbox" disabled>