Always sanitize and/or validate the inputs of every function before assuming the data is valid.
Never trust user input, even if it’s coming from an allegedly trustworthy source.
I built an app last night that allows me to look up bus arrival times via SMS. It took me 2 hours. Node is incredible!
I wanted to take a moment to un-obfuscate a technique of mine for others so I can continue to use it in my code.