Jan 29: Arrays and Objects

Learning Objectives

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

• Apply accessibility guidelines to a document, website, or application.
• Explain the difference between an array and an object in JavaScript.
• Write for, for...in, and for...of loops over objects and arrays.

Lesson Outline

Checklists [15 min]

• A11Y Project Checklist
• WebAIM WCAG Checklist
• JMU Digital Accessibility

Lecture [40 min]

• JS Cheatsheet: Pages 1–6 (Types–Loops)
• Chapter 8: Slides 27–44

Work Time [20 min]

• Overview of Lab 2 – provided files
• Folding a complex object in VS Code

Acronym Soup

Acronym	Meaning	Source
W3C	World Wide Web Consortium	w3.org
WAI	Web Accessibility Initiative	w3.org/WAI
WCAG	Web Content Accessibility Guidelines	W3C Reference
WAVE	Web Accessibility Evaluation Tools	webaim.org
ARIA	Accessible Rich Internet Applications	MDN Reference

Before Tuesday

1. Finish the reading from Prep 2.
2. Submit Lab 2 on Gradescope. ← Due Mon at 11:59pm