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Please enable JavaScript in your browser settings or update your browser.Challenge: Modifying and Extending Object | Objects Fundamentals
JavaScript Data Structures
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Contenido del Curso

JavaScript Data Structures

JavaScript Data Structures

1. Introduction and Prerequisites
Introduction to the CoursePrerequisites for the CourseWhat Will Be CoveredTips for Success
2. Objects Fundamentals
Understanding ObjectsObject CreationNested PropertiesChallenge: Creating an ObjectAccessing Object PropertiesChallenge: Accessing Object PropertiesWorking with PropertiesChallenge: Modifying and Extending ObjectObject MethodsProperties in MethodsChallenge: Working with Object MethodsObject Fundamentals Sum Up
3. Advanced Object Manipulation
Object Iteration with for...in LoopChallenge: Object Property ExplorerMethod hasOwnProperty()Challenge: hasOwnProperty() for Object Property IterationSpread OperatorChallenge: Merging Objects and Adding PropertiesObject DestructuringChallenge: DestructuringAdvanced Object Manipulation Sum Up
4. Mastering Arrays
Understanding ArraysChallenge: Array Element AccessorWorking with Array ElementsChallenge: Array Element Modifierfor LoopChallenge: Array Element Iterationfor...of LoopChallenge: Iteration with for...ofMastering Arrays Sum Up
5. Advanced Array Operations
map() MethodChallenge: Array Element Transformationfilter() MethodChallenge: Filtering Students by Exam Scoresfind() MethodChallenge: Discovering Featured Productssort() MethodChallenge: Sorting and Extracting PropertiesAdvanced Array Operations Sum UpCourse Sum Up

bookChallenge: Modifying and Extending 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".

              
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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
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Expected output:

  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
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Sección 2. Capítulo 8
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