如何通过onclick函数将选项列表中的值获取到连续的输入字段中

<select id="mySelect">
  <option value="option1">Option 1</option>
  <option value="option2">Option 2</option>
  <option value="option3">Option 3</option>
</select>

<input type="text" id="myInput" />

document.getElementById("mySelect").onclick = function() {
  var selectedValue = this.value;
  document.getElementById("myInput").value = selectedValue;
};