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I know we haven’t actually done anything very useful in a webpage up to this point, and it’s going to be a bit longer because we need to talk about a few more JavaScript concepts. So, think of JavaScript like a programming language. There are objects, functions, variables, and a lot of other built-ins that we’re going to discuss as well. What we’re going to do in this video is we’re going to create a simple function that will give us the missing number from an array. So, project time!