checkbox仅从一个Checkbox获取值。我需要在选中时获取多个复选框的值

<input type="checkbox" id="checkbox1" value="value1"> Option 1
<input type="checkbox" id="checkbox2" value="value2"> Option 2
<input type="checkbox" id="checkbox3" value="value3"> Option 3

<script>
function getSelectedValues() {
  var checkbox1 = document.getElementById("checkbox1");
  var checkbox2 = document.getElementById("checkbox2");
  var checkbox3 = document.getElementById("checkbox3");

  var selectedValues = [];

  if (checkbox1.checked) {
    selectedValues.push(checkbox1.value);
  }
  if (checkbox2.checked) {
    selectedValues.push(checkbox2.value);
  }
  if (checkbox3.checked) {
    selectedValues.push(checkbox3.value);
  }

  return selectedValues;
}

// 示例调用
var selectedValues = getSelectedValues();
console.log(selectedValues);
</script>