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There are a few.
Sort them! Do it!
What happens if I dynamically resize an array and then loop through its elements?
for, for...if, forEach, and for var of.
Create an object or just run a function.
Don't pollute the global namespace. Or the air.
It's two demos in one.
Yeah, it's not that cool.
They're actually more useful than this demo lets on.
This is actually a bad example because labels and placeholders are not semantically interchangeable.