Student struggling with Hackathon

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Everything You Wanted to Know About App Lab Arrays, But Were Afraid to Ask

Everything You Wanted to Know About Arrays, But Were Afraid to Ask. [ ] have two uses. One is to create an array and potentially initialize it. So for example: var a = [1,2,3]; That creates an array and assigns it to a variable. Is that variable an array now? No, it is not. Trick question. Variables don’t have types in Javascript. a is a variable that has an array value. It could just as easily hold a number or a string. Variables don’t care. I see a lot of var cats = [getColumn("Cats","Nam…