full stack authentication (JWT Bcrypt) Express + Mongodb + EJS

reference:
https://scotch.io/tutorials/use-ejs-to-template-your-node-application
https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Promise
https://tanmaysarkar.com/html-form-with-ejs-template-in-nodejs/
https://medium.freecodecamp.org/securing-node-js-restful-apis-with-json-web-tokens-9f811a92bb52
https://github.com/auth0/express-jwt
https://medium.com/dev-bits/a-guide-for-adding-jwt-token-based-authentication-to-your-single-page-nodejs-applications-c403f7cf04f4
https://blog.joeandrieu.com/2013/10/16/how-to-conditionally-display-variables-with-ejs/
https://stackoverflow.com/questions/25272006/access-localstorage-from-ejs-template
https://www.w3schools.com/html/html5_webstorage.asp

https://ejs.co/
https://dev.to/adrien09972856/how-to-create-a-session--login-with-ejs--2l7
https://stackoverflow.com/questions/10381681/place-html-in-javascript
https://stackoverflow.com/questions/44617825/passing-headers-with-axios-post-request-reactjs
https://stackoverflow.com/questions/32901015/how-to-add-header-authorization-for-post-form-using-js-ajax-jquery
https://stackoverflow.com/questions/44617825/passing-headers-with-axios-post-request-reactjs
https://github.com/axios/axios/issues/858
https://stackoverflow.com/questions/32901015/how-to-add-header-authorization-for-post-form-using-js-ajax-jquery

https://github.com/auth0/express-jwt
https://www.npmjs.com/package/jsonwebtoken

http://chuanshuoge2.blogspot.com/2018/11/bcrypt.html
http://chuanshuoge2.blogspot.com/2018/11/full-stack-react-mongodb-1.html