export function getAll() {
  let all = [];
  let opt = {
  method: 'get',
  url: 'all/teacher',
  success: res => {
   all = res.data.value || [];
  },
  fail: err => {
   tipInfo(err.data.desc, '提示', false, 'warning');
  }
  };
     $http(opt);
  return all;
 }
 console.log(getAll()); // []

   export function getAll() {
  return new Promise((resolve, reject) => {
  let opt = {
   method: 'get',
   url: 'all/teacher',
   success: res => {
   resolve(res.data.value || []);
   },
   fail: err => {
   reject(err.data.desc);
   }
  };
  $http(opt);
  });
 }
 // 调用
 getAll()
  .then(data => {
  console.log(data); // 
  })
  .catch(err => {
  this.tipInfo(err.data.desc, '提示', false, 'warning');
  });

  export function getAll(callback) {
   let opt = {
  method: 'get',
  url: 'all/teacher',
  success: res => {
   callback(res.data.value || []);
  },
  fail: err => {
   tipInfo(err.data.desc, '提示', false, 'warning');
  }
  };
  $http(opt);
 }
  // 调用
  getAllPark(data => {
   console.log(data); // 成功拿到数据
  });

// getName.js
import { getNameList } from "@/apis/apis";  // 导入接口

export default {
 state: {
  nameList: [] // 名称列表
 },
 mutations: {
  changeNameList(state, payload) {
   state.nameList= payload;
  }
 },
 actions: {
  geName(context) {
   getNameList ({}).then(res => {
    if (res.code == 0) {
     context.commit("changeNameList", res.data);
    } else {
     Message.error(res.message);
    }
   });
  }
 }
};

import getNamefrom "./modules/getName";
export default new Vuex.Store({
 modules: {
   getName
 },
});

<script>
export default {
 mounted() {
  this.$store.dispatch('geName')
 },
}

<template>
 <div>
   <el-select v-model="form.name" placeholder="请选择名称" clearable>
    <el-option v-for="item in nameList" :key="item.id" :label="item.fieldName" :value="item.fieldName"></el-option>
   </el-select>
 </div>
</template>    
    
<script>
export default {
 computed: {
  nameList() {
   return this.$store.state.getName.nameList
  }
 },
}
</script>

import movieService from '../services/movieService.js'

export default {
  namespaced: true,
  state: {
    current: 1,
    pageSize: 2,
    total: 0,
    datas: [],
    isLoading: false
  },
  mutations: { //改变状态的通用方法  设置整个状态
    setState(state, newState) {
      for (const prop in newState) {
        state[prop] = newState[prop]
      }
    }
  },
  actions: {
    fetch(context) { // 根据当前的分页设置，获取电影
      context.commit("setState", { isLoading: true })   
      movieService.getMovies(context.state.current, context.state.pageSize).then(resp => {
        console.log(resp)
        context.commit("setState", resp)
        context.commit("setState", { isLoading: false })
      })
    }
  }
}

// 在 movieService.js
export default {
  async getMovies(page, pageSize) {
    const datas = await fetch("https://api.myjson.com/bins/15f8x1")
      .then(resp => resp.json())
    return {
      total: datas.length,
      datas: datas.slice((page - 1) * pageSize, page * pageSize) //返回分页的电影数据
    }
  },
  //通过id获取电影数据
  async getMovie(id) {
    const datas = await fetch("https://api.myjson.com/bins/15f8x1")
      .then(resp => resp.json())
    return datas.find(item => item._id === id)
  }
}

 mounted() { //远程获取数据
    this.$store.dispatch("movie/fetch") //出发vuex中movie.js里的action，获取数据
 },