https://github.com/wesbos/es6.io
https://davidwalsh.name/javascript-debounce-function
https://blog.pramp.com/how-to-succeed-in-a-frontend-interview-d748cb073823
https://riya-rj-jain.medium.com/cracking-frontend-developer-interview-part-2-fef60df3d919
https://github.com/lydiahallie/javascript-questions
https://stackoverflow.com/questions/111102/how-do-javascript-closures-work?rq=1
http://ryanmorr.com/understanding-scope-and-context-in-javascript/
https://developer.mozilla.org/en-US/docs/Web/JavaScript/EventLoop
https://medium.com/front-end-weekly/javascript-event-loop-explained-4cd26af121d4
https://www.thatjsdude.com/interview/js2.html
https://github.com/ganqqwerty/123-Essential-JavaScript-Interview-Questions
- javascript collections Map, Set //http://2ality.com/2015/01/es6-maps-sets.html https://javascript.info/map-set-weakmap-weakset#tasks https://hackernoon.com/observer-vs-pub-sub-pattern-50d3b27f838c
--Next http://2ality.com/2013/06/iterators-generators.html http://speakingjs.com/es5/ch17.html#_pitfalls_using_an_object_as_a_map
https://angularfirebase.com/lessons/chatbot-in-angular-with-dialogflow-api-ai/
https://www.labsexplorer.com/news/create-a-simple-angular-chatbot-with-google-dialogflow_494
https://github.com/basarat/typescript-collections/tree/release/examples
https://theinfogrid.com/tech/developers/angular/filter-angular-async-pipe/amp/
https://medium.com/ableneo/how-to-pass-data-between-routed-components-in-angular-2306308d8255
https://medium.com/@sumeet.ru/how-to-create-custom-angular-element-a9e92dac2c13 https://blog.angulartraining.com/tutorial-how-to-create-custom-angular-elements-55aea29d80c5
https://morioh.com/p/how-to-create-restful-crud-api-with-node-js-mongodb-and-express-js
https://github.com/developerslearnit/ionic3-firebase-shopping-cart
https://theinfogrid.com/tech/developers/angular/filter-angular-async-pipe/amp/
https://easyrtc.com/docs/easyrtc_client_tutorial.php
https://csform.com/top-10-free-ionic-3-templates/ https://medium.com/enappd/18-ready-to-use-trending-ionic-react-native-app-templates-65156bb203ea
https://codepad.co/snippet/rotation-in-css3-from-circle-to-square