hkyy/admin-frame/public/worker/token.js

/*
 * @Author: your name
 * @Date: 2020-05-28 10:28:16
 * @LastEditTime: 2020-05-29 11:15:12
 * @LastEditors: Please set LastEditors
 * @Description: In User Settings Edit
 * @FilePath: \admin-frame\public\worker\worker.js
 */
let time;
onmessage = function(e) {
  const data = e.data;
  time = e.data.time / 1000 - 6;
  setInterval(jwtTime, 6000, data);
};

function jwtTime({ token }) {
  var base64Url = token.split('.')[1];
  var base64 = base64Url.replace(/-/g, '+').replace(/_/g, '/');
  var jsonPayload = decodeURIComponent(
    atob(base64)
      .split('')
      .map(function(c) {
        return '%' + ('00' + c.charCodeAt(0).toString(16)).slice(-2);
      })
      .join('')
  );
  const exp = JSON.parse(jsonPayload).exp;
  time = Number(time + 6);
  if (time > exp) {
    postMessage({
      errcode: -1,
      errmsg: '登录过期',
    });
  } else {
    postMessage({
      errcode: 0,
      errmsg: '未过期',
    });
  }
}