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Jesse Gay
Full Stack JavaScript Techdegree Student 14,045 PointsWhy don't we need return keyword for printToTen()? Function has more than one line.
const printToTen = () => {
for (let i = 1; i <= 10; i++) {
console.log(i);
}
}
has more than one line in the body. So how come we don't need the return keyword? Is it because, despite the fact that there are multiple "lines" when we view it as-written, there is really only 1 line (as far as JavaScript is concerned) because there is only 1 semicolon.
2 Answers
Steven Parker
231,198 PointsA "return" is implied, and therefore optional, at the end of every function. It's only mandatory when the function needs to pass back a value to the caller, which this one does not.
Semicolons at the end of statements are also optional, but it is considered a "best practice" to include them.
Jesse Gay
Full Stack JavaScript Techdegree Student 14,045 PointsThanks Steven Parker . Ah, got it. I was a little confused since at 00:56 of https://teamtreehouse.com/library/convert-to-arrow-function-expressions Ashley says "we also don't need the return keyword since arrow functions implicitly return the value of one-line functions." But, as you point out, this one doesn't return anything, so it's a moot point.
Steven Parker
231,198 PointsThe special one-line form of an arrow function does return a value, but this isn't one of those.
Happy coding!