课程: JavaScript Essential Training

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Practice: Build a function

Practice: Build a function - JavaScript教程

课程: JavaScript Essential Training

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Practice: Build a function

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- Functions are an integral part of JavaScript. And as you've seen, there are several different ways of declaring a function. In this practice assignment, I want you to really familiarize yourself with the basics of how to declare functions so you get used to writing them, calling them, and making them do stuff. Function expressions, function declarations, and arrow functions, all have their uses, and being comfortable with declaring all of them and recognizing them is hugely important to your learning. So here's what I want you to do. Create a basic function declaration. You'll remember, this is where we say function followed by the name of the function. In the body of the function declaration, do something to an element in the DOM. For this, you can use any of the techniques we've covered earlier, finding an element using QuerySelector, adding a class, whatever you like. Call this function declaration so the action…

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