JavaScript Data Structures

Course Content

JavaScript Data Structures

JavaScript Data Structures

1. Introduction and Prerequisites

Introduction to the Course Prerequisites for the Course What Will Be Covered Tips for Success

2. Objects Fundamentals

Understanding Objects Object Creation Nested Properties Challenge: Creating an Object Accessing Object Properties Challenge: Accessing Object Properties Working with Properties Challenge: Modifying and Extending Object Object Methods Properties in Methods Challenge: Working with Object Methods Object Fundamentals Sum Up

3. Advanced Object Manipulation

Object Iteration with for...in Loop Challenge: Object Property Explorer Method hasOwnProperty()Challenge: hasOwnProperty() for Object Property Iteration Spread Operator Challenge: Merging Objects and Adding Properties Object Destructuring Challenge: Destructuring Advanced Object Manipulation Sum Up

4. Mastering Arrays

Understanding Arrays Challenge: Array Element Accessor Working with Array Elements Challenge: Array Element Modifier for Loop Challenge: Array Element Iteration for...of Loop Challenge: Iteration with for...of Mastering Arrays Sum Up

5. Advanced Array Operations

map() Method Challenge: Array Element Transformation filter() Method Challenge: Filtering Students by Exam Scores find() Method Challenge: Discovering Featured Products sort() Method Challenge: Sorting and Extracting Properties Advanced Array Operations Sum Up Course Sum Up

Challenge: 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

Expected output:

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


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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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Section 2. Chapter 8

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