JavaScript Lesson 21: Control Flow

Introduction

• Presenter: Amy from Dev Dreamer
• Topic: Control Flow in JavaScript
• Previous Topics Covered: Primitive data types, global objects (Math, Date), operators

What is Control Flow?

• Default Execution: JavaScript code executes from top to bottom, line by line.
• Control Flow: Enables decision-making in code execution order.
  • Makes programs more dynamic and interactive.
  • Utilizes conditional statements and loops.

Conceptualizing Control Flow

• Flowcharts: Visual representation of control flow.
  • Example: Whether to order takeaway based on conditions like hunger and food availability.
• Decision Making: Change code execution based on conditions (true/false).

Importance of Control Flow

• Automates responses to changing conditions.
• Allows intelligent automation of repetitive tasks.

Components of Control Flow

Conditional Statements

• Purpose: Check if a condition is true or false.
• Examples:
  • If statements
  • If-Else statements
  • Else-If statements
  • Switch statements
  • Ternary operator

Loops

• Purpose: Perform repetitive tasks efficiently.
• Examples:
  • For loops
  • Do-While loops
  • While loops
  • For-In loops
  • For-Of loops

Summary

• Control flow is crucial for dynamic and powerful JavaScript applications.
• Involves executing code based on condition evaluations.
• Upcoming lessons will explore each component in detail, starting with if statements.

Conclusion

• Stay tuned for the next lesson on conditional statements.
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