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2 posts about defensive programming by 2 contributors.
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Learn JavaScript error handling with try...catch...finally and custom errors, plus defensive coding with optional chaining and nullish coalescing. Use browser DevTools to diagnose issues.
Since I have been a speaker and a teacher, I have always stressed the importance of practicing proper object-oriented programming (OOP) techniques. If you don’t practice OOP, no matter what language you are using, I guarantee you will end up with a “house of cards” and they all eventually fall.
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