049 Vanilla-JS-date-picker-on-GitHub
https://github.com/mymth/vanillajs-datepicker

050 Notie-on-GitHub
https://github.com/jaredreich/notie

051 SweetAlert-on-GitHub
https://github.com/sweetalert2/sweetalert2

051 SweetAlerts-documentation
https://sweetalert2.github.io/

053 Documentation-for-Javascript-modules-on-MDN-the-Mozila-Developers-Network
https://developer.mozilla.org/en-US/docs/Web/JavaScript/Guide/Modules