What are the top ten things a beginner must know about JavaScript?

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Control Flow. ... Error handling. ... Data Models. ... Asynchronity. ... DOM Manipulation. ... Node. ... Functional Approach. ... Object Oriented Approach.
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Some good resources
Clean Code by Robert C Martin, is available in my profile please download and read it, irrespective of what language you code in, it will change the way you code. Also if you code in Javascript read https://12factor.net/ https://blog.risingstack.com/javascript-clean-coding-best-practices-node-js-at-scale/ For...

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