From 4f71d9c8a72a14dd9235a72e16124d8379f3119f Mon Sep 17 00:00:00 2001 From: Drew Clements <36208622+drewclem@users.noreply.github.com> Date: Mon, 11 Mar 2019 17:07:47 -0400 Subject: [PATCH] Additional solution to Functional JS challenge (#29052) * Added additional solution to the challenge * Moved code explanation out of code block * fix: moved sentences to same paragraph --- .../index.md | 23 ++++++++++++++++++- 1 file changed, 22 insertions(+), 1 deletion(-) diff --git a/guide/english/certifications/javascript-algorithms-and-data-structures/functional-programming/use-the-filter-method-to-extract-data-from-an-array/index.md b/guide/english/certifications/javascript-algorithms-and-data-structures/functional-programming/use-the-filter-method-to-extract-data-from-an-array/index.md index e833cd9cb3..9dbd1ef8a0 100644 --- a/guide/english/certifications/javascript-algorithms-and-data-structures/functional-programming/use-the-filter-method-to-extract-data-from-an-array/index.md +++ b/guide/english/certifications/javascript-algorithms-and-data-structures/functional-programming/use-the-filter-method-to-extract-data-from-an-array/index.md @@ -8,7 +8,28 @@ This challange is solved in 2 steps. First, Array.prototype.filter is used to filter the array so it's left with elements that have imdbRating > 8.0. After that, Array.prototype.map can be used to shape the output to the desired format. -### Solution +### Beginner Solution + +```javascript + +// Add your code below this line + +var filteredList = watchList.map((movie) => { + return { + title: movie.Title, + rating: movie.imdbRating + } +}).filter((movie) => { + // return true it will keep the item + // return false it will reject the item + return parseFloat(movie.rating) >= 8.0 +}); +``` +#### Code Explanation +In the beginnner solution we're mapping over the watchList array to reduce the amount of data we have to work with and only returning the two items we need. Once we've reduced the items to what we're interested in (Title and imdbRating) we're filtering through and only returning the remaining items that meet the criteria. In this case it's having an imdbRating of 8.0 or higher. + + +### Intermediate Solution ```javascript