uniappに都市検索機能を実装する方法

<template>
  <view>
    <button @click="fetchCityData">获取城市数据</button>
  </view>
</template>

<script>
export default {
  methods: {
    fetchCityData() {
      uni.request({
        url: 'https://api.example.com/citydata',
        success: (res) => {
          uni.setStorage({
            key: 'cityData',
            data: res.data,
            success: () => {
              uni.showToast({
                title: '城市数据获取成功'
              })
            }
          })
        }
      })
    }
  }
}
</script>

<template>
  <view>
    <input v-model="searchText" placeholder="请输入城市名称" @input="handleInput"/>
    <view v-show="showResult">
      <ul>
        <li v-for="city in searchResult" :key="city.id" @click="selectCity(city)">{{ city.name }}</li>
      </ul>
    </view>
  </view>
</template>

<style>
  ul {
    list-style-type: none;
    padding: 0;
    margin: 0;
  }
  li {
    padding: 10px;
    background-color: lightgray;
    cursor: pointer;
  }
</style>

<script>
export default {
  data() {
    return {
      searchText: '',
      cityData: [],
      searchResult: [],
      showResult: false
    }
  },
  watch: {
    searchText() {
      this.showResult = true;
      if (this.searchText === '') {
        this.searchResult = [];
        this.showResult = false;
      } else {
        this.searchResult = this.cityData.filter(city => city.name.includes(this.searchText));
      }
    }
  },
  methods: {
    handleInput() {
      clearTimeout(this.timer);
      this.timer = setTimeout(() => {
        this.searchResult = this.cityData.filter(city => city.name.includes(this.searchText));
      }, 300);
    },
    selectCity(city) {
      // 处理选中城市的逻辑
    }
  },
  mounted() {
    uni.getStorage({
      key: 'cityData',
      success: (res) => {
        this.cityData = res.data;
      }
    })
  }
}
</script>