javascript - 如何在不使用库的情况下在javascript中解码jwt令牌？(How to decode jwt token in javascript without using a library?)

Question

How can I decode the payload of JWT using JavaScript?(如何使用JavaScript解码JWT的有效负载？)

Without a library.(没有图书馆。) So the token just returns a payload object that can consumed by my front-end app.(因此，令牌仅返回可由我的前端应用程序使用的有效负载对象。) Example token: xxxxxxxxx.XXXXXXXX.xxxxxxxx(令牌示例： xxxxxxxxx.XXXXXXXX.xxxxxxxx) And the result is the payload:(结果是有效负载：) {exp: 10012016 name: john doe, scope:['admin']}   ask by Chrisk8er translate from so

Answer 1

Working unicode text JWT parser function:(起作用的Unicode文本JWT解析器功能：)

function parseJwt (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('')); return JSON.parse(jsonPayload); };