I learned that it's possible to have holes in JavaScript arrays and how these holes can change overall behavior.
Articles โ Page 126
Keep writing, writing, writing ...
I learned that the Unicode character U+202E is perfect to trick your coworkers and turn everything around.
I learned that even 'new' constructor calls are interferrable with JavaScript proxies.
I learned about handy time based git logging function perfect for your next standup.
Globals are evil โ that's what we hear all the time. Let's have a look at globals in JavaScript.