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I'm a beginner in javascript and I use codewars for practice. I always find complete rubbish syntax in the top answers for each exercise. It always looks like: /|\/\?|/[asd]d++ What is this? This isn't classes and it's not functions. It looks like complete gibberish.

I don't know how it works and I don't understand it. Please help.

James Fofeh
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Those are probably Regular Expressions, it's a way to match patterns in a string.

A great tool to test them out on is: https://regexr.com/

Chris Barr
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