axios取消重复请求

// 删除重复请求
let s = 1; //单位秒，ajax取消延后时间
let pending = []; //声明一个数组用于存储每个请求的取消函数和axios标识
let cancelToken = Axios.CancelToken;
let removePending = config => {
  pending = pending.filter(i => new Date().getTime() - i.t < 500); // 过滤n秒前发的请求
  if (
    pending.length > 1 &&
    pending[pending.length - 2].u === config.url &&
    pending[pending.length - 1].t - pending[pending.length - 2].t < s * 500
  ) {
    // console.log('ajax取消操作');
    pending[pending.length - 2].f(); //执行取消操作
    pending.splice(pending.length - 2, 1);
  }
};

请求拦截器内：

const CANCEL_RETRANSMIT = [] // 指定需判断重复请求的接口

axios.interceptors.request.use(
  async config => {
      ...

    // 删除重复请求
    if (CANCEL_RETRANSMIT.indexOf(config.url) > -1) {
      console.log(config);
      config.cancelToken = new cancelToken(c => {
        pending.push({
          u: url,
          t: new Date().getTime(),
          f: c,
        });
      });
      await removePending(config);
    }
  }

  return config;
 }