Feb 24: Scope & Closures

Learning Objectives

After today’s class, you should be able to:

• Identify a variable’s lexical scope (global, function, block).
• Define and give a concrete example of a closure in JavaScript.
• Name and describe three Web APIs you can use in your project.

Lesson Outline

Debrief [5 min]

• Lab 5 solution – see Canvas Files

Lecture [15 min]

• Chapter 8: Slides 61–65
• capture-bubble.html

Tutorial [15 min]

• Install VS Code extensions
  • Markdown All in One
  • Markdown PDF
  • vscode-pdf
• Basic Syntax
  • Markdown Guide
  • Markdown Live Preview
  • Online Markdown Editor

AI Survey [20 min]

• Link announced in class
• Discussion about AI tools

Explore [20 min]

• Web APIs – for example:
  • DOM, Fetch, Geolocation, Web Speech, Web Storage

Before Thursday

1. Submit Prep 6 on Gradescope. ← Due Wed at 11:59pm