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Course Content
Introduction to JavaScript
JavaScript is one of the most popular and widely used programming languages in the world. It plays a crucial role in web development, enabling dynamic content, interactivity, and enhanced user experiences in web pages and applications. Let’s dive into what JavaScript is, its history, and how it fits into the modern web.
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What is JavaScript?
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Key Features of JavaScript
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A Brief History of JavaScript
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JavaScript in the Browser vs. Server (Node.js)
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Setting Up JavaScript Environment
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Why Learn JavaScript?
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How to Add JavaScript?
Before diving into the basics of JavaScript, it’s essential to understand how to include JavaScript in an HTML file. There are three main ways to do this:
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Inline JavaScript
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Internal JavaScript
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External JavaScript
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Different Ways to Output Data
JavaScript provides several ways to "display" or output data, allowing you to present dynamic content to users in various ways. Each method serves a different purpose and is used in different scenarios depending on the requirements. Here are the primary methods for displaying data using JavaScript:
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Using innerHTML
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Using document.write()
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Using window.alert()
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Using console.log()
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Variables and Constants
Variables and constants in JavaScript are used to store data values. Depending on how you declare them, their value can be changed or fixed.
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var, let, const
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Scope of Variables
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Data Types
JavaScript provides different types of values that can be stored in variables. These are categorized into two types: Primitives and Non-Primitives.
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Primitives Data Types
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Non – Primitives Data Types
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Operators
JavaScript operators allow you to manipulate values. These include:
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Arithmatic Operator
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Assignment Operators
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Comparison Operators
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Logical Operators
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Bitwise Operators
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Type Coercion and Conversion
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Conditional Statements (if, else if, else)
Conditional statements execute different actions based on different conditions.
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if, else if, else
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Ternary Operator
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Switch Statement
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What is Switch Statement?
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Loops
Loops allow you to execute a block of code multiple times.
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for Loop
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while Loop
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do-while Loop
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for…of and for…in Loops
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Loop Control: break, continue
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Functions
A function is a block of code designed to perform a particular task. Functions are reusable, making your code more modular and efficient.
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What is Function ?
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Function Declaration vs Function Expression
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Parameters and Return Values
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Default Parameters
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Rest and Spread Syntax (…args)
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Anonymous Functions
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Arrow Functions
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Higher-order Functions
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Objects
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Creating objects
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Accessing and Modifying Properties
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Methods in objects
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this Keyword and its Behavior
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Object Destructuring
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Object Methods
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Arrays
In JavaScript, an array is a special type of object that stores an ordered collection of values (elements). Arrays are zero-indexed, meaning the first element is accessed with index 0.
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Array Declaration and Initialization
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Accessing and Modifying Array Elements
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Array Methods
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Spread Syntax with Arrays
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Array Destructuring
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DOM Manipulation
DOM Manipulation is the process of using JavaScript to interact with and modify the HTML and CSS of a webpage. The DOM is essentially the structure of the webpage, represented as nodes, which can be elements, attributes, or pieces of text.
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What is DOM Manipulation?
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Selecting Elements
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Changing Content and Styles
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Adding and Removing Elements Dynamically
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Events and Event Listeners
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What is Events and Event Listeners?
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Event Listener
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Common Event Types and Practical Examples
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Removing Event Listeners
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Passing Parameters to Event Handlers
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Event Delegation
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Stopping Event Propagation
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Classes in JavaScript
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Classes in JavaScript
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Defining a Class
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Objects in JavaScript
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Real-World Example: User Class
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Adding Getters and Setters
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Inheritance in JavaScript
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The this Keyword
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Static Methods
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Assignments
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String Functions in JavaScript
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String Functions in JavaScript
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Number Functions in Javascript
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Number Functions in JavaScript
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Error Handling in JavaScript
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Error Handling in JavaScript
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try…catch Block
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Throwing Custom Errors
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Error Types
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Combining try…catch with Custom Errors
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RegEx (Regular Expressions) in JavaScript
Regular expressions (regex) are patterns used to match sequences of characters in strings. They are powerful tools for searching, validating, and manipulating text.
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Basic Syntax of Regex (Regex)
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String Methods Using Regex
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Patterns and Flags
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JavaScript Modules
JavaScript modules allow developers to split code into reusable pieces that can be imported and exported across files. This makes code more maintainable, reusable, and organized.
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What is JavaScript Modules & Why we use Modules?
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Exporting in JavaScript Modules
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Importing in JavaScript Modules
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Combining Named and Default Exports
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JavaScript Hoisting
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What is Hoisting and Types of Hoisting?
JavaScript JSON (JavaScript Object Notation)
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What is JSON?
Key Methods of JavaScript JSON
JavaScript Style Guide
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Importance of a Style Guide
JavaScript Best Practices
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JavaScript Best Practices
JavaScript
About Lesson

What is JavaScript Modules?

JavaScript modules allow developers to split code into reusable pieces that can be imported and exported across files. This makes code more maintainable, reusable, and organized.

 Why Use Modules?

  1. Encapsulation: Separate concerns and keep code self-contained.
  2. Reusability: Share code across different parts of an application or projects.
  3. Maintainability: Break large programs into manageable pieces.

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