--- id: 587d7b8f367417b2b2512b63 title: Use the filter Method to Extract Data from an Array challengeType: 1 videoUrl: '' localeTitle: Использовать фильтр Метод извлечения данных из массива --- ## Description
Другая полезная функция массива - Array.prototype.filter() или просто filter() . Метод filter возвращает новый массив, который не больше, чем исходный массив, но обычно имеет меньше элементов. Filter не изменяет исходный массив, как map . Он выполняет функцию обратного вызова, которая применяет логику внутри обратного вызова для каждого элемента массива. Если элемент возвращает true на основе критериев в функции обратного вызова, он включается в новый массив.
## Instructions
Переменная watchList содержит массив объектов с информацией о нескольких фильмах. Используйте комбинацию filter и map чтобы вернуть новый массив объектов только с title и ключами rating , но где imdbRating больше или равно 8.0. Обратите внимание, что значения рейтинга сохраняются как строки в объекте, и вы можете преобразовать их в числа для выполнения математических операций над ними.
## Tests
```yml tests: - text: Переменная watchList не должна изменяться. testString: 'assert(watchList[0].Title === "Inception" && watchList[4].Director == "James Cameron", "The watchList variable should not change.");' - text: Ваш код должен использовать метод filter . testString: 'assert(code.match(/\.filter/g), "Your code should use the filter method.");' - text: Ваш код не должен использовать цикл for . testString: 'assert(!code.match(/for\s*?\(.+?\)/g), "Your code should not use a for loop.");' - text: 'filteredList должен равняться [{"title": "Inception","rating": "8.8"},{"title": "Interstellar","rating": "8.6"},{"title": "The Dark Knight","rating": "9.0"},{"title": "Batman Begins","rating": "8.3"}] .' testString: 'assert.deepEqual(filteredList, [{"title": "Inception","rating": "8.8"},{"title": "Interstellar","rating": "8.6"},{"title": "The Dark Knight","rating": "9.0"},{"title": "Batman Begins","rating": "8.3"}], "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"}].");' ```
## Challenge Seed
```js // the global variable var watchList = [ { "Title": "Inception", "Year": "2010", "Rated": "PG-13", "Released": "16 Jul 2010", "Runtime": "148 min", "Genre": "Action, Adventure, Crime", "Director": "Christopher Nolan", "Writer": "Christopher Nolan", "Actors": "Leonardo DiCaprio, Joseph Gordon-Levitt, Ellen Page, Tom Hardy", "Plot": "A thief, who steals corporate secrets through use of dream-sharing technology, is given the inverse task of planting an idea into the mind of a CEO.", "Language": "English, Japanese, French", "Country": "USA, UK", "Awards": "Won 4 Oscars. Another 143 wins & 198 nominations.", "Poster": "http://ia.media-imdb.com/images/M/MV5BMjAxMzY3NjcxNF5BMl5BanBnXkFtZTcwNTI5OTM0Mw@@._V1_SX300.jpg", "Metascore": "74", "imdbRating": "8.8", "imdbVotes": "1,446,708", "imdbID": "tt1375666", "Type": "movie", "Response": "True" }, { "Title": "Interstellar", "Year": "2014", "Rated": "PG-13", "Released": "07 Nov 2014", "Runtime": "169 min", "Genre": "Adventure, Drama, Sci-Fi", "Director": "Christopher Nolan", "Writer": "Jonathan Nolan, Christopher Nolan", "Actors": "Ellen Burstyn, Matthew McConaughey, Mackenzie Foy, John Lithgow", "Plot": "A team of explorers travel through a wormhole in space in an attempt to ensure humanity's survival.", "Language": "English", "Country": "USA, UK", "Awards": "Won 1 Oscar. Another 39 wins & 132 nominations.", "Poster": "http://ia.media-imdb.com/images/M/MV5BMjIxNTU4MzY4MF5BMl5BanBnXkFtZTgwMzM4ODI3MjE@._V1_SX300.jpg", "Metascore": "74", "imdbRating": "8.6", "imdbVotes": "910,366", "imdbID": "tt0816692", "Type": "movie", "Response": "True" }, { "Title": "The Dark Knight", "Year": "2008", "Rated": "PG-13", "Released": "18 Jul 2008", "Runtime": "152 min", "Genre": "Action, Adventure, Crime", "Director": "Christopher Nolan", "Writer": "Jonathan Nolan (screenplay), Christopher Nolan (screenplay), Christopher Nolan (story), David S. Goyer (story), Bob Kane (characters)", "Actors": "Christian Bale, Heath Ledger, Aaron Eckhart, Michael Caine", "Plot": "When the menace known as the Joker wreaks havoc and chaos on the people of Gotham, the caped crusader must come to terms with one of the greatest psychological tests of his ability to fight injustice.", "Language": "English, Mandarin", "Country": "USA, UK", "Awards": "Won 2 Oscars. Another 146 wins & 142 nominations.", "Poster": "http://ia.media-imdb.com/images/M/MV5BMTMxNTMwODM0NF5BMl5BanBnXkFtZTcwODAyMTk2Mw@@._V1_SX300.jpg", "Metascore": "82", "imdbRating": "9.0", "imdbVotes": "1,652,832", "imdbID": "tt0468569", "Type": "movie", "Response": "True" }, { "Title": "Batman Begins", "Year": "2005", "Rated": "PG-13", "Released": "15 Jun 2005", "Runtime": "140 min", "Genre": "Action, Adventure", "Director": "Christopher Nolan", "Writer": "Bob Kane (characters), David S. Goyer (story), Christopher Nolan (screenplay), David S. Goyer (screenplay)", "Actors": "Christian Bale, Michael Caine, Liam Neeson, Katie Holmes", "Plot": "After training with his mentor, Batman begins his fight to free crime-ridden Gotham City from the corruption that Scarecrow and the League of Shadows have cast upon it.", "Language": "English, Urdu, Mandarin", "Country": "USA, UK", "Awards": "Nominated for 1 Oscar. Another 15 wins & 66 nominations.", "Poster": "http://ia.media-imdb.com/images/M/MV5BNTM3OTc0MzM2OV5BMl5BanBnXkFtZTYwNzUwMTI3._V1_SX300.jpg", "Metascore": "70", "imdbRating": "8.3", "imdbVotes": "972,584", "imdbID": "tt0372784", "Type": "movie", "Response": "True" }, { "Title": "Avatar", "Year": "2009", "Rated": "PG-13", "Released": "18 Dec 2009", "Runtime": "162 min", "Genre": "Action, Adventure, Fantasy", "Director": "James Cameron", "Writer": "James Cameron", "Actors": "Sam Worthington, Zoe Saldana, Sigourney Weaver, Stephen Lang", "Plot": "A paraplegic marine dispatched to the moon Pandora on a unique mission becomes torn between following his orders and protecting the world he feels is his home.", "Language": "English, Spanish", "Country": "USA, UK", "Awards": "Won 3 Oscars. Another 80 wins & 121 nominations.", "Poster": "http://ia.media-imdb.com/images/M/MV5BMTYwOTEwNjAzMl5BMl5BanBnXkFtZTcwODc5MTUwMw@@._V1_SX300.jpg", "Metascore": "83", "imdbRating": "7.9", "imdbVotes": "876,575", "imdbID": "tt0499549", "Type": "movie", "Response": "True" } ]; // Add your code below this line var filteredList; // Add your code above this line console.log(filteredList); ```
## Solution
```js // solution required ```