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Functions and Events

Lesson 13/17 | Study Time: 60 Min

What You Will Learn in This Live Session

1. Functions in JavaScript

  • What are functions, and why they are used in programming.
  • How to define and call functions.
  • Types of functions:
    • Named Functions – Regular functions with a name.
    • Anonymous Functions – Functions without a name.
    • Arrow Functions – Shorter syntax for defining functions.
    • Callback Functions – Functions passed as arguments to other functions.
  • Understanding function parameters and return values.

2. Events in JavaScript

  • What are events, and how they allow user interaction.
  • How to handle events using Event Listeners (addEventListener).

3. Event Handling and Functions Together

  • Using functions to handle events efficiently.
  • Understanding event propagation (bubbling and capturing).
  • Preventing default behavior with event.preventDefault().

Why This Is Important

  • Functions make code reusable, modular, and maintainable.
  • Events allow real-time interaction with web pages.
  • Combining functions and events enables dynamic and responsive web applications.