Course Content

JavaScript Data Structures

1. Introduction and Prerequisites

Introduction to JavaScript Data Structures Prerequisites for Learning JavaScript Data Structures What You'll Learn in This Course Tips for Success

2. Fundamentals of JavaScript Objects

Understanding Objects in JavaScript Creating Objects in JavaScript Working with Nested Object Properties Challenge: Create and Structure an Object Accessing Object Properties in JavaScript Challenge: Retrieve Object Property Values Managing Object Properties Challenge: Modify and Extend an Object Defining Object Methods Using Properties within Methods Challenge: Work with Object Methods Fundamentals of JavaScript Objects Sum-Up

3. Advanced Object Manipulation Techniques

Iterating Over Object Properties with the for...in Loop Challenge: Explore Object Properties with Iteration Using hasOwnProperty() to Check Object Properties Challenge: Object Property Iteration with hasOwnProperty()Cloning and Merging Objects with the Spread Operator Challenge: Combine Objects with the Spread Operator Destructuring Objects for Cleaner Code Challenge: Extract Data with Object Destructuring Advanced Object Manipulation Sum-Up

4. Mastering JavaScript Arrays

Understanding JavaScript Arrays Challenge: Access Array Elements Modifying Arrays and Accessing Elements Challenge: Modify Array Elements Iterating Over Arrays with the for Loop Challenge: Loop Through Arrays with for Using the for...of Loop for Array Iteration Challenge: Efficient Array Iteration with for...of Mastering JavaScript Arrays Sum-Up

5. Advanced Array Methods and Transformations

Transforming Arrays with the map() Method Challenge: Modify Array Elements Using map()Filtering Arrays with the filter() Method Challenge: Select Specific Data Using filter()Finding Elements in an Array with the find() Method Challenge: Search for Items Using find()Sorting Arrays with the sort() Method Challenge: Sort and Extract Data with sort()Advanced Array Methods and Transformations Sum-Up Course Summary

Using the for...of Loop for Array Iteration

Syntax

The for...of loop is a more modern and concise way to iterate over arrays. It automatically handles the loop counter and provides direct access to each element's value. The syntax for a for...of loop is as follows:

In this syntax:

const element is a variable that stores the value of each element during each iteration;
of array specifies the array we want to iterate over.

Example

Here's an example of using the for...of loop to achieve the same result as the previous for loop:


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const students = ["Brandon", "Mario", "Saul"];

for (const student of students) {
  console.log(student);
}

Line 1: It declares a constant variable named students and assigns it an array containing three strings - "Brandon", "Mario", and "Saul". This array represents a list of student names;
Line 3: It starts a for...of loop. The loop is used to iterate through each element in the students array one at a time;
Line 4: Inside the for...of loop, we use the console.log() function to log the value of the current element to the console. The student variable represents the current element in the array during each loop iteration. So, in the first iteration, it will be "Brandon", in the second iteration, "Mario", and in the third iteration, "Saul".