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JavaScript JavaScript Functions Arrow Functions Create an Arrow Function

Kevin Tucker
Kevin Tucker
4,987 Points
Posted by Kevin Tucker
Kevin Tucker
4,987 Points

Arrow Functions

I've gone through videos but I still can't solve this challenge, could someone shed some light? Its driving me nuts.

script.js 
greet('cool coders');

function greet(val) {
  return `Hi, ${val}!`;
}

4 Answers

Dimitar Dimitrov
Dimitar Dimitrov
11,800 Points
Dimitar Dimitrov
Dimitar Dimitrov
11,800 Points

First you need to declare the function expression and then call it because arrow functions are not hoisted on the top of the code 

let greet = (val) => {
  return `Hi, ${val}!`;
}

greet('cool coders');
Kevin Tucker
Kevin Tucker
4,987 Points
Kevin Tucker
Kevin Tucker
4,987 Points

Thank you for that. What does this section of code do: greet('cool coders');. I kept trying to include in the arrow function which is where I was going wrong.

Dimitar Dimitrov
Dimitar Dimitrov
11,800 Points
Dimitar Dimitrov
Dimitar Dimitrov
11,800 Points

The greet("cool coders") code is where the function is called with string argument "cool coders"

seth aruby
seth aruby
10,111 Points
seth aruby
seth aruby
10,111 Points

Dimitar's solution is a perfectly fine one. You could even simplify it further with the following:

const greet = x => `Hi, x`;
greet('cool coders');

Thus utilizing the implicit return w/o curly braces concise syntax. https://teamtreehouse.com/library/javascript-functions/arrow-functions/concise-arrow-function-syntax

David Wollett
David Wollett
2,194 Points
David Wollett
David Wollett
2,194 Points

Arrow expressions are not my strong suit for sure. One of my mistakes ('for the past hour') was writing a whole separate code along with the code already given to me. Of course kept getting the 'Greet function has already been defined' error. This community helped me straighten that mistake out. Thanks guys!