FAQ: Functions - Concise Body Arrow Functions


#1

This community-built FAQ covers the "Concise Body Arrow Functions " exercise from the lesson “Functions”.

Paths and Courses
This exercise can be found in the following Codecademy content:

Web Development

Introduction To JavaScript

FAQs on the exercise _Concise Body Arrow Functions _

There are currently no frequently asked questions associated with this exercise – that’s where you come in! You can contribute to this section by offering your own questions, answers, or clarifications on this exercise. Ask or answer a question by clicking reply (reply) below.

If you’ve had an “aha” moment about the concepts, formatting, syntax, or anything else with this exercise, consider sharing those insights! Teaching others and answering their questions is one of the best ways to learn and stay sharp.

Join the Discussion. Help a fellow learner on their journey.

Ask or answer a question about this exercise by clicking reply (reply) below!

Agree with a comment or answer? Like (like) to up-vote the contribution!

Need broader help or resources? Head here.

Looking for motivation to keep learning? Join our wider discussions.

Learn more about how to use this guide.

Found a bug? Report it!

Have a question about your account or billing? Reach out to our customer support team!

None of the above? Find out where to ask other questions here!


#2

A post was split to a new topic: I don’t get this lesson


#3

Even more concise code:

const plantNeedsWater = day => day === ‘Wednesday’;

console.log(plantNeedsWater(‘Wednesday’));


#4

And we can write it this consisely, why?


#5

The solution to this exercise confused me a tad…

How are we able to use the concise body function when the correct answer is too long and still results in a multi-line block?


#6

When there are multiple lines of code in the block, write it like a regular function expression (with curly braces and a return).

const foo = (baz, bar) => {
    // code
    // code
    // code
    return "some value"
};

#7

I struggled with this exercise too.
Whilst concise functions sound useful - I prefer the more readable form of multi-line functions personally.
Still it’s useful to know!


#8

I was good until the last page (review functions):

When I played around with the code I noticed:

const plantNeedsWater = day => day === 'Wednesday' ? 'Water me' : "Don't water me";

can also be on two lines

const plantNeedsWater = day => day === 'Wednesday' 
? 'Water me' : "Don't water me";

… without having to use the ‘return’ statement, or additional code. I was considering this if the true/false answers were a longer statement; to allow for better readability. Is this doable, or should I be considering a better way to keep the code ‘clean’?