Class 7-8: Introduction to JavaScript

Class 7-8: Introduction to JavaScript

Objectives:

• Understand the fundamentals of JavaScript, including variables, data types, and operators.

• Learn about JavaScript control structures like if-else statements, loops, and functions.

• Gain skills in DOM (Document Object Model) manipulation to dynamically change webpage elements.

Detailed Breakdown:

Session 7: Basics of JavaScript

1. Introduction to JavaScript
   • What is JavaScript?
     • Describe JavaScript as a scripting language that enables interactive web pages, emphasizing its role in front-end development.
   • Role in Web Development
     • Explain how JavaScript works alongside HTML and CSS to add functionality and interactivity to web pages.

2. JavaScript Fundamentals
   • Variables
     • Introduce variables as a way to store data. Cover declaring variables using var, let, and const.
   • Data Types
     • Explain different data types in JavaScript: strings, numbers, booleans, arrays, objects, undefined, and null.
   • Operators
     • Discuss arithmetic operators (+, , , /), assignment operators (=), and comparison operators (==, ===, >, <).

3. Hands-On Exercise: Basic JavaScript Operations
   • Exercise Overview
     • Practice creating variables, performing operations, and outputting results to the console.
   • Tools Required
     • Use a text editor and a web browser with developer tools/console for testing JavaScript.

Session 8: Control Structures and DOM Manipulation

1. Control Structures
   • Conditional Statements
     • Teach how to make decisions in code using if, else, and else if statements.
   • Loops
     • Explain different types of loops (for, while, do-while) and their usage in iterating over data.
   • Functions
     • Introduce functions as a way to encapsulate and reuse code. Cover creating and calling functions.

2. DOM Manipulation
   • Introduction to the DOM
     • Describe the DOM as a tree-like representation of the webpage, which JavaScript can interact with.
   • Selecting Elements
     • Teach how to use methods like document.getElementById(), document.getElementsByClassName(), and document.querySelector() to select HTML elements.
   • Changing Elements
     • Show how to modify webpage elements by changing their text content, HTML, and CSS styles.

3. Hands-On Exercise: Adding Interactivity
   • Exercise Overview
     • Implement interactive features on the webpage, such as responding to click events or validating form data.
   • Tools Required
     • Continue using a text editor and a web browser.
   • Step-by-Step Guidance
     • Guide students through adding event listeners to buttons and creating a basic form validation script.

Additional Resources:

• JavaScript Tutorials and Documentation
  • Provide links to resources like Mozilla Developer Network (MDN) for in-depth JavaScript guides and documentation.

• Interactive JavaScript Learning Platforms
  • Recommend platforms like Codecademy or freeCodeCamp for interactive JavaScript exercises and challenges.

Class Interaction:

• Practical Demonstrations
  • Use live coding to demonstrate JavaScript concepts, showing real-time results in the browser.