element ui loading加载开启与关闭方式

 //Loading加载
      openFullScreen() {
        const loading = this.$loading({
          lock: true,
          text: 'Loading',
          spinner: 'el-icon-loading',
          background: 'rgba(0, 0, 0, 0.7)'
        });
        return loading;
      }

 closeFullScreen(loading){
        loading.close();
 },

//开启
this.openFullScreen();
//vue框架 axios请求
 this.$http.post("url").then(res => {
	//请求成功关闭；
    this.closeFullScreen(this.openFullScreen());
 }).catch(()=>{
  	//请求失败关闭；
    this.closeFullScreen(this.openFullScreen());
 })

import { Loading } from 'element-ui';

let loadingCount = 0;
let loading;

const startLoading = () => {
  loading = Loading.service({
    lock: true,
    text: '加载中……',
    background: 'rgba(0, 0, 0, 0.7)'
  });
};

const endLoading = () => {
  loading.close();
};

export const showLoading = () => {
  if (loadingCount === 0) {
    startLoading();
  }
  loadingCount += 1;
};

export const hideLoading = () => {
  if (loadingCount <= 0) {
    return;
  }
  loadingCount -= 1;
  if (loadingCount === 0) {
    endLoading();
  }
};

// ...
import { showLoading, hideLoading } from './loading';

/* 请求拦截器（请求之前的操作） */
ajax.interceptors.request.use((req) => {
  showLoading();
  return req;
}, err => Promise.reject(err));

/* 请求之后的操作 */
ajax.interceptors.response.use((res) => {
  hideLoading();

  return res;

  return Promise.reject(res);
}, (err) => {
  hideLoading();
  return Promise.reject(err);
});