Day 3 - Random numbers and arrays

Housekeeping

• Group project submission overview
• Draft CPNT 262 Assessments announced after lunch

1. Spoilers

• Sample code and instructions
• Bug hunt - syntax errors

2. Arrays

Demo: Random numbers and arrays

• Find a random item in an Array

3. Introduction to functions

Materials

• Gist: Defining functions
• Gist: Invoking functions

Activity: Refactor into functions

• Sample code and instructions

Lab Time

• Draft CPNT 262 Assessments announced
• Group Projects due tonight!

Prep

System Requirements

• Node (which you probably already have installed):

  $ node --version

  • To install:
    • Easy - Binary Installer
    • Maybe Tricky - Try nvm for that pro look.

Watch List

• Arrays and Functions in JavaScript Tutorial for Beginners: Learn JavaScript in 1 Hour by Mosh
  • 35:22 Arrays
  • 39:41 Functions
  • 44:22 Types of Functions

Reading list

• MDN: Arrays
• Function expressions

Search list

• “js functions for beginners”
• “js random number”
• “math builtin object”

Recommended exercises

• Javascript basics: Exercises 9-22
  • Start: Add Two Numbers with JavaScript
  • Stop (or not): Compound Assignment With Augmented Division