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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.

              
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

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Sektion 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 alt klart?

Hvordan kan vi forbedre det?

Tak for dine kommentarer!

Sektion 5. Kapitel 4
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