如何在dropdown中动态添加数据？

<select id="myDropdown"></select>

var dropdown = document.getElementById("myDropdown");

var option = document.createElement("option");
option.value = "value1";
option.text = "Option 1";

dropdown.appendChild(option);

<select id="myDropdown"></select>

<script>
var dropdown = document.getElementById("myDropdown");

var option1 = document.createElement("option");
option1.value = "value1";
option1.text = "Option 1";
dropdown.appendChild(option1);

var option2 = document.createElement("option");
option2.value = "value2";
option2.text = "Option 2";
dropdown.appendChild(option2);
</script>