From the course: Computer Science Principles Lab: JavaScript
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Return values from functions - JavaScript Tutorial
From the course: Computer Science Principles Lab: JavaScript
Return values from functions
- [Instructor] In addition to accepting values and functions, you can return values from functions. This allows you to use functions like any other variable because when you run it, it returns a value. You already know of two ways to assign values to a variable. The first is to assign a defined value, like the number five. This is called a literal. The other way is to use math, or some other function, to change a value, like using addition or subtraction. This is called an evaluation. The third is to use a function, but that function needs to return a value. If we open up the code for this lesson, we'll see that we have a variable that holds a subtotal and we output that to the console log. It doesn't do that much but what we need to do is add a way to calculate the tax. Since tax could be different based on location, we should create a new function to calculate the tax and use a function parameter to change what the tax rate should be. We can create a new function to do exactly that.…
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