Mar 25: Arrays and Fetch

Learning Objectives

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

• Describe the array functions: forEach(), find(), filter(), map(), reduce().
• Explain how data is requested from an API using fetch(), then(), and catch().
• Write a chain of function calls that fetch JSON data and display/filter the results.

Lesson Outline

Announcements [5 min]

• Calendar updates
  • Week 9: Prep 8 and Lab 7
  • Week 10: Prep 9 and Lab 8
  • Week 11: Exam 2 and Project 2
• Project 2 – due in 3 weeks
  • Make incremental commits over time
  • Spend at least 1 hour this week (and next)
  • Did everyone accept the GitHub invitation?

Array Functions [30 min]

• 22_Textbook_Array.pdf – by Connolly and Hoar

• 23_Array-Functions.pdf – by Kirkpatrick

• Live Editor – JS 8 - Array Functions

Fetching Data [40 min]

• 24_Textbook_Fetch.pdf – by Connolly and Hoar

• 25_AJAX-vs-Fetch.pdf – by Kirkpatrick

• Live Editor – JS 11 - Fetching JSON