freeCodeCamp/guide/english/certifications/javascript-algorithms-and-data-structures/es6/write-arrow-functions-with-parameters/index.md

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Write Arrow Functions with Parameters

Write Arrow Functions with Parameters

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Problem Explanation

Here is a cool resource about anonymous functions in JavaScript, in case you are still wondering what they are, and their role.

Now, you are tasked at putting parameters inside arrow functions.

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Hints

Hint 1

Get rid of the function keyword. Put the arrow operator.

Hint 2

Make sure you changed the var to a const.

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Solutions

Solution 1 (Click to Show/Hide)

const myConcat = (arr1, arr2) => {
  "use strict";
  return arr1.concat(arr2);
};
// test your code
console.log(myConcat([1, 2], [3, 4, 5]));