Get filter to return nothing when condition is false

JavaScript
1

I am working on the “Use the Filter Method to Extract Data from an Array” challenge.

I can get my code to return the correct info for the parts of the array that meet the condition, but for the ones that evaluate to false, it returns undefined. I want it to return nothing at all. If the last element of the input array does not meet the condition, then I want it to be excluded from the new array.

I cannot think of how to do that. Does anyone have a hint for me?

Thanks!


var movies = [...watchList];



var filteredList = watchList.map(function(movies) {
  
//var ratings = parseInt(movies.imdbRating);
 if (movies.imdbRating > 8) {
 
 

return ("\"title\": " + movies.Title + " ," + "\"rating\": \"" + movies.imdbRating + '\"\ ');
 }

 else {
   return false;
  }
});
2

I’ve edited your post for readability. When you enter a code block into a forum post, please precede it with a separate line of three backticks and follow it with a separate line of three backticks to make easier to read.

See this post to find the backtick on your keyboard. The “preformatted text” tool in the editor (</>) will also add backticks around text.

Note: Backticks are not single quotes.

markdown_Forums

3

You’re not filtering, you’re using map, which takes an array, transforms every element in the array, then returns that new array. It can’t decrease or increase the size of the array.

4

Thank you. That’s really obvious in hindsight. It’s great to get another pair of eyes on a problem sometimes, I guess.