我也试过@change和watch，似乎都不起作用。
如何检测选择值何时更改？
下面是我的代码：

<select v-model="selected" @change="changeLang()" >
    <option v-for="item in langList" :key="item.text" :value="item.lang">
      {{ item.text }}
    </option>
 </select>

function changeLang()
{
   console.log("Called>>>>");
}

watch(() => selected, (first, second) => {
      console.log(
        "Watch props.selected function called with args:",
        first,
        second
      );
});