jwt decode in react code example

Example 1: how to decode jwt token in react

let b64DecodeUnicode = str =>
  decodeURIComponent(
    Array.prototype.map.call(atob(str), c =>
      '%' + ('00' + c.charCodeAt(0).toString(16)).slice(-2)
    ).join(''))

let parseJwt = token =>
  JSON.parse(
    b64DecodeUnicode(
      token.split('.')[1].replace('-', '+').replace('_', '/')
    )
  )

Example 2: npm jwt decode

import jwt_decode from "jwt-decode"; var token = "eyJ0eXAiO.../// jwt token";var decoded = jwt_decode(token); console.log(decoded); /* prints: * { foo: "bar", *   exp: 1393286893, *   iat: 1393268893  } */ // decode header by passing in options (useful for when you need `kid` to verify a JWT):var decodedHeader = jwt_decode(token, { header: true });console.log(decodedHeader); /* prints: * { typ: "JWT", *   alg: "HS256" } */