SOURCE

function decodeJWT(token) {
  const [headerB64, payloadB64, signature] = token.split('.');
  const payload = JSON.parse(atob(payloadB64));
  // 以下是获取用户信息的示例代码
  const user = {
    id: payload.sub,
    name: payload.name,
    email: payload.email,
    custom_claim: payload.custom_claim,
    userId:payload.userId
    // ... other user information
  };
  return user;
}

var jwt = 'eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJzdWIiOiIxMjM0NTY3ODkwIiwibmFtZSI6IkpvaG4gRG9lIiwiaWF0IjoxNTE2MjM5MDIyfQ.SflKxwRJSMeKKF2QT4fwpMeJf36POk6yJV_adQssw5c';

jwt='eyJhbGciOiJIUzUxMiJ9.eyJzdWIiOiJ1c2VyMSIsImV4cCI6MTY5MDI3MzczMDE3NSwiaWF0IjoxNjkwMjcwMTMwMTc1fQ.HHT0_UwEAbiQ35n9A-ClNVxU6QtcE1OheGRk3Mga69jMmtNWQmfhaexY65XjaeEvu0eqkC0pTlOaEKIiXrnz1Q';
jwt='eyJraWQiOiIyMjQ3MzUwMi01MWFjLTQ3NzAtYTk5OS1kNjcyMzM5OGM5OWUiLCJhbGciOiJSUzI1NiJ9.eyJzdWIiOiJtZXNzYWdpbmctY2xpZW50IiwiYXVkIjoibWVzc2FnaW5nLWNsaWVudCIsIm5iZiI6MTY5MDI2MjUyNCwiaXNzIjoiaHR0cDovL2xvY2FsaG9zdDo4MDgwIiwiZXhwIjoxNjkwMjY0MzI0LCJpYXQiOjE2OTAyNjI1MjR9.iIOvExJ3XHa9Upos92h3pRYanXL37QmUjXigLFCHdvmKSVivR29IzKAfZxOmuR7h5A3oTSDfGY3r5-aeEmyxjzDT0kDcsVIpeonNzzWiPmSKzL-HofYJvTKKewUHt6VNZt4kXnsrP6zRNadbBoSitAMuGRewfg5Z22YdRLUD14bbClgWRllhFJza7ROsKZyhkiwjyyx7OL_Nbp5pcrhb_31ToA7PD2Sp0wzN_d0QA482gt12heZJuMZITX6G0bEFiD0ujn8vT9LiJ4ryZeRkA8z8h-SX6PQgFqJu2-CZkHDx60QV6mBzvtm6QKzP-OpEwRrT67-LvS_EfdJEl4R8_g';
jwt='eyJhbGciOiJIUzI1NiJ9.eyJzdWIiOiJ1c2VyMTIzIiwiZXhwIjoxNjkwMjc0OTAxLCJpYXQiOjE2OTAyNzEzMDF9.NUsekiTIrpo3Y0S5hqoiepjMHuciSXVAJGB1vjJJK_w';
jwt='eyJraWQiOiJkOGZhYzZlOS1mYmY5LTQzN2YtOTAwMy0wYWZkMDhiMjVmOTYiLCJhbGciOiJSUzI1NiJ9.eyJzdWIiOiJtZXNzYWdpbmctY2xpZW50IiwiYXVkIjoibWVzc2FnaW5nLWNsaWVudCIsIm5iZiI6MTY5MDI3NzkyMCwiaXNzIjoiaHR0cDovL2xvY2FsaG9zdDo4MDgwIiwibmFtZSI6Im9zY2FyOTk5IiwiZXhwIjoxNjkwMjc5NzIwLCJpYXQiOjE2OTAyNzc5MjB9.qL-04EjzMbcISw2FMhxLfVV2-n9G-KJEJju9u-0AURdVKLZjmS5pTc_LHAGFIzJG2350R8ZjjyKTO8_FQVoRQOSYEAyqaODkFm_WIUBDszEk13Wvu4hHbN8wjNR1yQfZ--iWh9vtMnOu6qoPhHgGLU52wPIhduQARAgjdxNiKZA1S5qP7Oh-luQExPlR9w8QPVjQqepu5X-0DOJKxtVIuMKwvmTqcqLn2Dp1D5b8B1RALLx84G1h74cZ-I_q4MiDdpnd9KHyRBdHH4c6YwEifpaj6EdMcqnCmZg3GrBY24N2HsOUA-_iETNewPweoXCFK1Mxv8QUGMG_6MSfuBA1qQ';
jwt='eyJraWQiOiJiYjYxMTU5My1jMzBhLTRhMDEtYmQ5Ni1jMzEyZDllZDEyNjEiLCJhbGciOiJSUzI1NiJ9.eyJzdWIiOiJtZXNzYWdpbmctY2xpZW50IiwiYXVkIjoibWVzc2FnaW5nLWNsaWVudCIsImVtcGlkIjoiMTIzNDUiLCJuYmYiOjE2OTAyNzgxNTUsImlzcyI6Imh0dHA6Ly9sb2NhbGhvc3Q6ODA4MCIsIm5hbWUiOiJvc2Nhcjk5OSIsImV4cCI6MTY5MDI3OTk1NSwiaWF0IjoxNjkwMjc4MTU1fQ.biN6fwA0EptH4OS0zyFLXwinWBV6x0Wq6-5lieuoN6LpWU7K4KKFu4ALcwUaQ4EVK_cQ95ih-HWNx42AT0fZfnSxZBG4-o6mumMZPi7CLHk2z3ZzeBXZR5KgZsfcQiN6VEFtoqQs8IYh-euiA2fIjFtdlb_80F6fosrMlK-1Hp5yZ8pjkwuMLmdOkyZFF2dCsnDgT1M04XfYvBIjd0yPAw9686PotGj2Ei-UugjsVwunfj9SOVhsSgS3WKCg4y_u4Lj1pbbMiozab3091xVk_lBiu5_w-EYg44bhPuW54Oa1uOF71YpM2Gqws5XP9yhQnmxD_jRrmqidGwpnU6uE-A';
jwt='eyJraWQiOiJmYjQwZTI5YS1jNjhhLTRlZjctYjlhOS0xZDhlYWZhNjg2OTAiLCJhbGciOiJSUzI1NiJ9.eyJzdWIiOiJtZXNzYWdpbmctY2xpZW50IiwiYXVkIjoibWVzc2FnaW5nLWNsaWVudCIsIm5iZiI6MTY5MDI3ODU4MCwiaXNzIjoiaHR0cDovL2xvY2FsaG9zdDo4MDgwIiwibmFtZSI6Im9zY2FyOTk5IiwiY3VzdG9tX2NsYWltIjoiZXhhbXBsZS12YWx1ZSIsImV4cCI6MTY5MDI4MDM4MCwiaWF0IjoxNjkwMjc4NTgwfQ.UmhoWJMqjuj9mX5vykWNpVlWo7N8YWXB8mhc_ptYlX5Izn757JtZFss3mlRDeezanjlzNVDRxG07mseLv3KpoTMVfv9K1A5wo-r1rR84UJmxM6jWYT_M2wWoQCVW8SUiKPwwp_zwRW8DQ3FS5v8YRxgPmnDz0cB5-KvmmMBpS7bYptP2atZcOWTJFDPW8Ak9do5j2UwzWZLI_tiJVejQ1PxH0oxqlWbCRrNVOSzF7X6UziankPLxh5a7EW-nJIGjEBW3vIGdqJbECaiSCPbuYCNau0rl5nrItPrCKNPZhUJ9suRmRc9OkPuHTyub8gNm7hPY2LK4UofZ5kKNgnjI0w'
jwt='eyJhbGciOiJIUzI1NiJ9.eyJzdWIiOiJqaTJ1a084cThZbUk5YTg1UDlTRDdwYTFxWjZzQUdST2xKUDk5WmRSUHowZ1lWZUt5M1JEIS0xMjkxNjUwMjY0IiwiZXhwIjoxNjkwODU1NjYyLCJ1c2VySWQiOiI0MDQzMCIsImlhdCI6MTY5MDg1MjA2Mn0.CTsXU-GEvr2OrK9QD4l1BknnI3TiZmMigUDW-Il5crE';
jwt='eyJhbGciOiJIUzI1NiJ9.eyJzdWIiOiJjTnEwbXp0QnA5eTZvMlhyLVBhZ2huSmo1eDI4SG1IakxPSFBmSWJsT01LcmlRc0RfemdnIS0xNjgzOTA1NDM2ITE2OTA5NTIyMTk0NTciLCJpc3MiOiJQb3J0YWwgV1MiLCJ1c2VySWQiOiIwMjk4MCIsImlhdCI6MTY5MDk1MzU3NiwiZXhwIjoxNjkwOTU3MTc2fQ.OELvG74grscgGHDFOOMX-t8XXPLwYk3uR-Pv77n7HMc';
const user = decodeJWT(jwt);
//console.log(user);
//console.log(user.userId);


function decodePortalToken(token) {
  const [headerB64, payloadB64, signature] = token.split('.');
  const payload = JSON.parse(atob(payloadB64));
  const claimobj = {
    id: payload.sub,
    name: payload.name,
    userId:payload.userId
  };
  return claimobj;
}
var token = 'eyJhbGciOiJIUzI1NiJ9.eyJzdWIiOiJjTnEwbXp0QnA5eTZvMlhyLVBhZ2huSmo1eDI4SG1IakxPSFBmSWJsT01LcmlRc0RfemdnIS0xNjgzOTA1NDM2ITE2OTA5NTIyMTk0NTciLCJpc3MiOiJQb3J0YWwgV1MiLCJ1c2VySWQiOiIwMjk4MCIsImlhdCI6MTY5MDk1NDM1MywiZXhwIjoxNjkwOTU3OTUzfQ.pOnswm-SV3cKyfBYIZ4lywf1NIjX0jkAqZAXkVgIarE';
token = 'eyJhbGciOiJIUzI1NiJ9.eyJzdWIiOiJPc3htIiwidXNlcklkIjoib3NjYXIiLCJyb2xlIjoiYWRtaW4ifQ.hbOYBLS_m3MXJEA3bvGehrHy5uftbsF1zuIG0RSWmzA';
const claimobj = decodeJWT(jwt);
var userId = claimobj.userId; //00001
console.log(userId);
console.log(claimobj.name);
console.log(claimobj);