Variables, Data Types, and Operators
Lectures 12 • 40 slides
Narration
Session 12 Slide 1: Welcome to JavaScript Basics ②
Today's Theme
JavaScript Basics ②: Conditional Branching, Loops, and Functions
Review of Last Time
- Variables (let, const)
- Data Types (string, number, boolean)
- Operators (arithmetic, comparison, logical)
What You Will Learn Today
You will learn about program "control".
flowchart TD
A[Program Start] --> B[Sequential Processing]
B --> C{Conditional Branching}
C -->|Condition A| D[Process A]
C -->|Condition B| E[Process B]
D --> F[Looping Process]
E --> F
F --> G{Continuation Condition}
G -->|Yes| F
G -->|No| H[Function Call]
H --> I[Program End]
3 Control Structures
- Sequential Processing - Execute in order from the top
- Conditional Branching - Change processing depending on conditions
- Looping - Execute the same process many times
Function
- Group processes and give them a name
- Code reuse
- Improved maintainability
Today's Goal
Be able to write practical programs
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