<template>
 <div></div>
</template>
 
<script>
export default {
 data() {
  return {
   num: 0
  };
 },
 created() {
  // 实现轮询
  window.setInterval(() => {
   setTimeout(this.getNewMessage(), 0);
  }, 3000);
 },
 methods: {
  // 请求是否有新消息
  getNewMessage: function() {
   console.log("请求" + this.num++ + "次");
  }
 }
};
</script>
 
<style scoped>
</style>

<div>
        <el-dialog
          :visible.sync="loadingVisible"
          width="30%">
        <i class="fa fa-spin fa-star"></i>
        <span>这是一段信息</span>
      </el-dialog>
    </div>

doing() {
        const vm = this;
        vm.loadingVisible = true;
        vm.timer = setInterval(vm.getstatus, 2000);
      },
 
 
getstatus() {
        const vm = this;
        
        vm.loadingVisible = false;
        clearInterval(vm.timer);
      }
    },