how to write a front-end framework by using the vanilla javascript?

23 種設計模式 APP

https://www.quora.com/How-can-I-make-my-own-front-end-framework

https://dev.to/aspittel/building-web-components-with-vanilla-javascript--jho

https://medium.com/@patrickackerman/classic-front-end-mvc-with-vanilla-javascript-7eee550bc702

https://medium.com/bunnyllc/vanilla-js-components-8d20c58b69f4

https://www.upwork.com/hiring/development/beginners-guide-to-front-end-development/

MutationObserver API

https://davidwalsh.name/mutationobserver-api

https://github.com/Mevrael/bunny/blob/master/src/DOMObserver.js

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CSS

codepen

bug

https://codepen.io/xgqfrms/pen/JZRbmN

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