如何在映射到数组时设置select选项的默认值

var options = [
  { value: 'option1', label: 'Option 1' },
  { value: 'option2', label: 'Option 2' },
  { value: 'option3', label: 'Option 3' }
];

<select id="mySelect">
  <option value="">Select an option</option>
</select>

var select = document.getElementById("mySelect");

for (var i = 0; i < options.length; i++) {
  var option = document.createElement("option");
  option.value = options[i].value;
  option.text = options[i].label;

  // 判断当前选项是否为默认选项
  if (options[i].value === "option2") {
    option.selected = true;
  }

  select.appendChild(option);
}