vue input输入框实时搜索

废话不多说先看效果：

代码如下：

<template>
  <div style="padding-left: 3px; margin-top: 3px">
    <!-- 搜索框 -->
    <div class="input-warp">
      <input
        class="input"
        v-model="keyWord"
        type="text"
        placeholder="输入城市名称进行查找"
      />
      <el-button class="input-search" icon="el-icon-search" circle></el-button>
    </div>
    <div class="searchList" v-if="keyWord">
      <ul>
        <li
          v-for="(item, index) in searchData"
          :key="index"
          @click="chooseCode(item)"
        >
          {{ item.name }}
        </li>
        <li v-if="searchData.length == 0">暂无相关城市，请换个城市进行搜索</li>
      </ul>
    </div>
  </div>
</template>

<script>
import { searchCityList } from "@/api/homeApi";
export default {
  data() {
    return {
      keyWord: "",
      searchData: [],
    };
  },

  created() {},
  watch: {
  //这里监听监听输入框的值，如果发生改变执行接口方法
    keyWord: {
      handler(newv, oldv) {
        this.getSearchData();
      },
    },
  },
  mounted() {},
  methods: {
  //获取用户输入城市的列表
    getSearchData() {
      searchCityList({ cityName: this.keyWord }).then((res) => {
        if (res.success == true) {
          console.log(res.data);
          this.searchData = res.data.list;
        }
      });
    },
    //当用户点击搜索出来的城市之后
    chooseCode(data) {
      // console.log(data);
      this.$store.commit("CHANGE_CITYCODE", data.code);
      this.$store.commit("CHANGE_CITYNAME", data);
      this.$store.commit("CHANGE_CITYDIALOG", false);

      if (window.location.pathname == "/houseDetail") {
        this.$router.push({ path: "/house" });
      } 
      this.$router.go(0);
    },
  },
};
</script>

<style scoped lang="less">
// 搜索框
.input-warp {
  position: relative;
  .input {
    border: none;
    width: 766px;
    height: 50px;
    box-sizing: border-box;
    opacity: 0.9;
    background: #ffffff;
    border: 1px solid #fff;
    padding: 0 55px 0 25px;
    border-radius: 25px;
    box-shadow: 0px 1px 4px 0px rgba(146, 146, 146, 0.6);
    &:focus-visible {
      outline: none;
    }
  }
  ::v-deep .input-search {
    position: absolute;
    top: 7px;
    right: 422px;
    color: #fff;
    text-align: center;
    width: 36px;
    height: 36px;
    opacity: 1;
    background: linear-gradient(90deg, #3493ff, #485cff);
    border-radius: 50%;
    box-shadow: 0px 1px 4px 0px rgba(146, 146, 146, 0.6);
    .el-icon-search {
      font-size: 19px;
      margin: -4px;
    }
  }
}
.searchList {
  width: 766px;
  // height: 300px;
  box-shadow: 0px 1px 4px 0px rgb(146 146 146);
  padding: 15px 0;
  // padding-left: 26px;
  box-sizing: border-box;
  overflow: auto;
}
li {
  list-style: none;
  line-height: 40px;
  font-size: 16px;
  padding-left: 26px;
}
li:hover {
  cursor: pointer;
  background: #f8f8f9;
}
</style>