element-plus/docs/examples/input/autocomplete-template.vue

<template>
  <el-autocomplete
    v-model="state"
    :fetch-suggestions="querySearch"
    popper-class="my-autocomplete"
    placeholder="Please input"
    @select="handleSelect"
  >
    <template #suffix>
      <i class="el-icon-edit el-input__icon" @click="handleIconClick"></i>
    </template>
    <template #default="{ item }">
      <div class="value">{{ item.value }}</div>
      <span class="link">{{ item.link }}</span>
    </template>
  </el-autocomplete>
</template>

<script lang="ts">
import { defineComponent, ref, onMounted } from 'vue'
export default defineComponent({
  setup() {
    const links = ref([])

    const querySearch = (queryString: string, cb) => {
      const results = queryString
        ? links.value.filter(createFilter(queryString))
        : links.value
      // call callback function to return suggestion objects
      cb(results)
    }
    const createFilter = (queryString) => {
      return (restaurant) => {
        return (
          restaurant.value.toLowerCase().indexOf(queryString.toLowerCase()) ===
          0
        )
      }
    }
    const loadAll = () => {
      return [
        { value: 'vue', link: 'https://github.com/vuejs/vue' },
        { value: 'element', link: 'https://github.com/ElemeFE/element' },
        { value: 'cooking', link: 'https://github.com/ElemeFE/cooking' },
        { value: 'mint-ui', link: 'https://github.com/ElemeFE/mint-ui' },
        { value: 'vuex', link: 'https://github.com/vuejs/vuex' },
        { value: 'vue-router', link: 'https://github.com/vuejs/vue-router' },
        { value: 'babel', link: 'https://github.com/babel/babel' },
      ]
    }
    const handleSelect = (item) => {
      console.log(item)
    }

    const handleIconClick = (ev) => {
      console.log(ev)
    }

    onMounted(() => {
      links.value = loadAll()
    })

    return {
      links,
      state: ref(''),
      querySearch,
      createFilter,
      loadAll,
      handleSelect,
      handleIconClick,
    }
  },
})
</script>

<style>
.my-autocomplete li {
  line-height: normal;
  padding: 7px;
}
.my-autocomplete li .name {
  text-overflow: ellipsis;
  overflow: hidden;
}
.my-autocomplete li .addr {
  font-size: 12px;
  color: #b4b4b4;
}
.my-autocomplete li .highlighted .addr {
  color: #ddd;
}
</style>