QRCODE

 https://www.geeksforgeeks.org/qr-code-generator-using-html-css-and-jquery/

https://stackoverflow.com/questions/30115242/generating-a-simple-qr-code-with-just-html

https://blog.usman-s.me/how-to-make-your-qr-code-generator-using-html-css-and-javascript

https://codepen.io/jasonadelia/pen/jatwq

https://www.ways2read.com/design-a-qr-code-generator-html-css-and-jquery/

https://acervolima.com/gerador-de-codigo-qr-usando-html-css-e-jquery/

https://medium.com/geekculture/few-ways-to-generate-qr-code-using-javascript-54b6b5220c4f

http://thenewcode.com/614/Add-QR-Codes-To-Web-Pages-Automatically-For-Easy-Link-References-From-Printed-Copies

http://www.weichbrodt.it/qr-code-plugin-per-cms-made-simple/

Express.JS Node Router Server

 

https://www.tabnine.com/code/javascript/functions/express/Express/post

https://expressjs.com/pt-br/guide/routing.html

https://expressjs.com/pt-br/4x/api.html

https://www.ti-enxame.com/pt/javascript/como-enviar-um-post-solicitacao-de-node.js-express/1056045498/

https://visionmedia.github.io/superagent/

https://codeforgeek.com/handle-get-post-request-express-4/

https://www.codegrepper.com/code-examples/javascript/app.post+in+express

https://developer.mozilla.org/pt-BR/docs/Learn/Server-side/Express_Nodejs/Introduction

https://www.digitalocean.com/community/tutorials/use-expressjs-to-get-url-and-post-parameters