import VueGoogleAutocomplete from 'vue-google-autocomplete';

export default {
  components: {
    VueGoogleAutocomplete
  },
  data() {
    return {
      inputValue: ''
    };
  },
  methods: {
    clearInput() {
      this.inputValue = '';
    }
  }
}

<template>
  <div>
    <vue-google-autocomplete
      v-model="inputValue"
      :placeholder="'Enter address'"
    ></vue-google-autocomplete>
    <button @click="clearInput">Clear</button>
  </div>
</template>

methods: {
  clearInput() {
    this.inputValue = '';
  }
}