全局进度条

let LoadingTip = Vue.extend({
  template: `
    <div id="vue-loading" class="loading__wrapper">
    <div class="loading_contend">
      <title class="loading_title">{{loadingTitle}}</title>
      <el-progress :percentage="loadingNum"></el-progress>
    </div>
    </div>`,
  data: function () {
    return {
      // loadingNum: store.state.iomsFrontendStore.loadingJson.loadingNum
    };
  },
  computed: {
    loadingTitle() {
      return store.state.loadingJson.loadingTitle;
    },
    loadingNum() {
      return store.state.loadingJson.loadingNum;
    }
  }
});
// 2、创建实例，挂载到文档以后的地方
let tpl = new LoadingTip().$mount().$el;

export function startLoading() {
  // 3、把创建的实例添加到body中
  document.body.appendChild(tpl);
  // 阻止遮罩滑动
  document.querySelector('#vue-loading').addEventListener('touchmove', function (e) {
    e.stopPropagation();
    e.preventDefault();
  });
}


export function endLoading() {
  if (document.querySelector('#vue-loading')) {
    let tpl = document.querySelector('#vue-loading');
    document.body.removeChild(tpl);
  }
}