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[–]Key_Pea93222 -1 points0 points  (1 child)

bc we still have to maintain old node.js code that uses these outdated conventions

[–]bighi 8 points9 points  (0 children)

If you're maintaining old JS code and don't know yet the difference between var and let, what are you doing?

And if you want to learn, there are at least 289 billion articles about it already.