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Lära Challenge: Select Specific Data Using filter() | Advanced Array Methods and Transformations
JavaScript Data Structures

bookChallenge: Select Specific Data Using filter()

Task

Given an array of student objects, use the filter() method to create a new array called highScorers that includes only the students with exam scores greater than or equal to 90.

  • The original array is given as students, containing objects representing students with properties name and score.
  • Check if the student's score is greater or equal to 90.
  • Use the filter() method on the students array to create a new array, highScorers, that includes only the students with high scores.
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const students = [ { name: "Alice", score: 92 }, { name: "Bob", score: 87 }, { name: "Charlie", score: 95 }, { name: "David", score: 78 }, { name: "Emma", score: 90 }, ]; const highScorers = students.___((___) => { return ___; }); for (let i = 0; i < highScorers.length; i += 1) { console.log(highScorers[i].name); }
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Expected output:

Alice
Charlie
Emma

The filter() method will create a new array by including only the elements that satisfy the condition specified in the callback function.

123456789101112131415
const students = [ { name: "Alice", score: 92 }, { name: "Bob", score: 87 }, { name: "Charlie", score: 95 }, { name: "David", score: 78 }, { name: "Emma", score: 90 }, ]; const highScorers = students.filter((student) => { return student.score >= 90; }); for (let i = 0; i < highScorers.length; i += 1) { console.log(highScorers[i].name); }
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Tack för dina kommentarer!

Avsnitt 5. Kapitel 4

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bookChallenge: Select Specific Data Using filter()

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Task

Given an array of student objects, use the filter() method to create a new array called highScorers that includes only the students with exam scores greater than or equal to 90.

  • The original array is given as students, containing objects representing students with properties name and score.
  • Check if the student's score is greater or equal to 90.
  • Use the filter() method on the students array to create a new array, highScorers, that includes only the students with high scores.
123456789101112131415
const students = [ { name: "Alice", score: 92 }, { name: "Bob", score: 87 }, { name: "Charlie", score: 95 }, { name: "David", score: 78 }, { name: "Emma", score: 90 }, ]; const highScorers = students.___((___) => { return ___; }); for (let i = 0; i < highScorers.length; i += 1) { console.log(highScorers[i].name); }
copy

Expected output:

Alice
Charlie
Emma

The filter() method will create a new array by including only the elements that satisfy the condition specified in the callback function.

123456789101112131415
const students = [ { name: "Alice", score: 92 }, { name: "Bob", score: 87 }, { name: "Charlie", score: 95 }, { name: "David", score: 78 }, { name: "Emma", score: 90 }, ]; const highScorers = students.filter((student) => { return student.score >= 90; }); for (let i = 0; i < highScorers.length; i += 1) { console.log(highScorers[i].name); }
copy

Var allt tydligt?

Hur kan vi förbättra det?

Tack för dina kommentarer!

Avsnitt 5. Kapitel 4
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