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JavaScript Fundamentals

7 Units35 Lessons
Unit 1

Basics

Setting Up a JavaScript Development Environment
Writing and Running Simple JavaScript Code
Understanding Basic Data Types and Variables
Real-World Project: Creating a Basic Interactive Web Page
Introduction to JavaScript and Its Syntax
Unit 2

Variables and Data Types

Best Practices for Variable Naming and Scope
Declaring and Initializing Variables in JavaScript
Working with Complex Data Types like Objects and Arrays
Exploring Primitive Data Types
Real-World Project: Building a Simple Data Tracker
Unit 3

Control Structures

Implementing Switch Statements
Working with For and While Loops
Using If-Else Statements for Conditional Logic
Nesting Control Structures for Complex Logic
Real-World Project: Creating a Dynamic List Generator
Unit 4

Functions

Passing Parameters and Returning Values
Arrow Functions and Function Expressions
Understanding Function Scope and Closures
Defining and Calling Functions
Real-World Project: Developing a Calculator Tool
Unit 5

Arrays and Objects

Creating and Accessing Array Elements
Manipulating Arrays with Methods
Nested Arrays and Objects
Working with Objects and Properties
Real-World Project: Managing a User Database
Unit 6

DOM Manipulation

Selecting and Accessing DOM Elements
Modifying DOM Content and Attributes
Handling Events in the DOM
Real-World Project: Building an Interactive Form Validator
Creating and Removing DOM Elements Dynamically
Unit 7

Advanced JavaScript

Asynchronous JavaScript with Promises and Async/Await
Prototypes and Inheritance
Modules and ES6 Features
Error Handling and Debugging Techniques
Real-World Project: Developing a Full-Featured Web Application
Unit 2•Chapter 2

Declaring and Initializing Variables in JavaScript

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Concept Check

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What error occurs if you declare a variable twice with the same name using let?

Can you assign a value to a variable after declaring it separately in JavaScript?

What is the result of console.log(x) after let x = 123?

Is variable name uniqueness required in JavaScript declarations?

What data type is assigned in let price = 10.99?

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