Use the filter Method to Extract Data from an Array - double output after Run the Tests

JavaScript
1

Tell us what’s happening:

Why after Run the Tests i have the output printed double time?
Thank You
Bart

Console before clicking Run the Tests:

[ { title: 'Inception', ratings: '8.8' },
  { title: 'Interstellar', ratings: '8.6' },
  { title: 'The Dark Knight', ratings: '9.0' },
  { title: 'Batman Begins', ratings: '8.3' } ]

Console after clicking Run the Tests:

// running tests

filteredList

should equal

[{"title": "Inception", "rating": "8.8"}, 
{"title": "Interstellar", "rating": "8.6"},
 {"title": "The Dark Knight", "rating": "9.0"},
 {"title": "Batman Begins", "rating": "8.3"}]

. // tests completed // console output
 [ { title: 'Inception', ratings: '8.8' },
 { title: 'Interstellar', ratings: '8.6' },
 { title: 'The Dark Knight', ratings: '9.0' },
 { title: 'Batman Begins', ratings: '8.3' } ]
 [ { title: 'Inception', ratings: '8.8' },
 { title: 'Interstellar', ratings: '8.6' },
 { title: 'The Dark Knight', ratings: '9.0' },
 { title: 'Batman Begins', ratings: '8.3' } ]

Your code so far

const filteredList = watchList
    .filter(e => e.imdbRating >= 8.0)
    .map(e => ({
                title: e.Title,
                ratings: e.imdbRating
            }));
2

Hello @uosiua

I’m not sure why but I assume that as you make edits on the editor, the code gets executed automatically → This explains the first console log. When you run the tests eventually, you initiate running the code again which explains the second console log.

I think that’s why.

3

Hello @alekskimeu,

The first console log is ok, that is in all the lessons, but for the first time i have the issue after running the test, and it can not pass because of that.

4

The problem is not the console.log() statement. It’s not passing because you haven’t wrapped the object’s properties in quotes. I just ran the tests on my end and it’s passing. Try that out.

5

The problem was that I created object as:

.map(e => ({
title: e.Title,
ratings: e.imdbRating
}));

instead of

.map(e => {
return {
title: e.Title,
rating: e.imdbRating
};
});

Thank you.

6

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