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JavaScript Data Structures

bookChallenge: Modify and Extend an Object

Task

You're given an object, student, representing a student's information. Your task is to modify existing properties and add new properties.

  • Modify the student's age to be 21.
  • Add a new property called grade and set it to "A".

              
12345678910111213

            
const student = {
  name: "Pauline Reilly",
  age: 24,
  major: "Humanities",
};

// Task 1: Modify `age` to `21`
___ = ___
console.log(student.age); // Output: 21

// Task 2: Add a new property `grade`
___ = ___
console.log(student.grade); // Output: A
copy

Expected output:

21
A
  1. To modify a property's value, use assignment with dot notation.
  2. To add a new property, use the assignment with dot notation, providing the property name and value.

              
12345678910111213

            
const student = {
  name: "Pauline Reilly",
  age: 24,
  major: "Humanities",
};

// Task 1: Modify `age` to `21`
student.age = 21;
console.log(student.age); // Output: 21

// Task 2: Add a new property `grade`
student.grade = "A";
console.log(student.grade); // Output: A
copy

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Come possiamo migliorarlo?

Grazie per i tuoi commenti!

Sezione 2. Capitolo 8

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bookChallenge: Modify and Extend an Object

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Task

You're given an object, student, representing a student's information. Your task is to modify existing properties and add new properties.

  • Modify the student's age to be 21.
  • Add a new property called grade and set it to "A".

              
12345678910111213

            
const student = {
  name: "Pauline Reilly",
  age: 24,
  major: "Humanities",
};

// Task 1: Modify `age` to `21`
___ = ___
console.log(student.age); // Output: 21

// Task 2: Add a new property `grade`
___ = ___
console.log(student.grade); // Output: A
copy

Expected output:

21
A
  1. To modify a property's value, use assignment with dot notation.
  2. To add a new property, use the assignment with dot notation, providing the property name and value.

              
12345678910111213

            
const student = {
  name: "Pauline Reilly",
  age: 24,
  major: "Humanities",
};

// Task 1: Modify `age` to `21`
student.age = 21;
console.log(student.age); // Output: 21

// Task 2: Add a new property `grade`
student.grade = "A";
console.log(student.grade); // Output: A
copy

Tutto è chiaro?

Come possiamo migliorarlo?

Grazie per i tuoi commenti!

Sezione 2. Capitolo 8
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