如何在vuejs中处理多个下拉选择的更改事件

data() {
  return {
    selectedOption1: '',
    selectedOption2: '',
    selectedOption3: ''
  }
}

<select v-model="selectedOption1">
  <option value="option1">Option 1</option>
  <option value="option2">Option 2</option>
  <option value="option3">Option 3</option>
</select>

<select v-model="selectedOption2">
  <option value="option1">Option 1</option>
  <option value="option2">Option 2</option>
  <option value="option3">Option 3</option>
</select>

<select v-model="selectedOption3">
  <option value="option1">Option 1</option>
  <option value="option2">Option 2</option>
  <option value="option3">Option 3</option>
</select>

watch: {
  selectedOption1(newValue) {
    // 处理selectedOption1的变化
  },
  selectedOption2(newValue) {
    // 处理selectedOption2的变化
  },
  selectedOption3(newValue) {
    // 处理selectedOption3的变化
  }
}