Course Content

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

JavaScript Data Structures

Challenge: Iteration with for...of

Task

You are given an array of objects. Each object represents a friend's information. The task is to create a for...of loop to iterate through the array and add one more property to each object that should be: online: false.

Use a for...of loop to iterate through the friends array.
Inside the for...of loop, use the dot notation to add the property.

Expected Output:

To create a for...of loop, use the following syntax: for (const element of array) { ... }.
Use the dot notation (.) to add a property (online) and assign it the value false.

Everything was clear?

Section 4. Chapter 8

Course Content

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

3. Advanced Object Manipulation

4. Mastering Arrays

5. Advanced Array Operations

JavaScript Data Structures

Challenge: Iteration with for...of

Task

Use a for...of loop to iterate through the friends array.
Inside the for...of loop, use the dot notation to add the property.

Expected Output:

To create a for...of loop, use the following syntax: for (const element of array) { ... }.
Use the dot notation (.) to add a property (online) and assign it the value false.

Everything was clear?

Section 4. Chapter 8