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

<template>
  <el-row class="demo-autocomplete">
    <el-col :span="12">
      <div class="sub-title">list suggestions when activated</div>
      <el-autocomplete
        v-model="state1"
        :fetch-suggestions="querySearch"
        class="inline-input"
        placeholder="Please Input"
        @select="handleSelect"
      />
    </el-col>
    <el-col :span="12">
      <div class="sub-title">list suggestions on input</div>
      <el-autocomplete
        v-model="state2"
        :fetch-suggestions="querySearch"
        :trigger-on-focus="false"
        class="inline-input"
        placeholder="Please Input"
        @select="handleSelect"
      />
    </el-col>
  </el-row>
</template>
<script lang="ts">
import { defineComponent, ref, onMounted } from 'vue'
export default defineComponent({
  setup() {
    const restaurants = ref([])
    const querySearch = (queryString: string, cb) => {
      const results = queryString
        ? restaurants.value.filter(createFilter(queryString))
        : restaurants.value
      // call callback function to return suggestions
      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)
    }
    onMounted(() => {
      restaurants.value = loadAll()
    })
    return {
      restaurants,
      state1: ref(''),
      state2: ref(''),
      querySearch,
      createFilter,
      loadAll,
      handleSelect,
    }
  },
})
</script>