Day 2 - Numbers, Math and Errors

Housekeeping

• CPNT 260 Assignment 4 release after lunch

1. Declaring and assigning variables

Demo: Math in Javascript

Materials:

• Number
• Arithmetic operators
• Template literals

Activity: Tip Calculator Refactor

In pairs, add functionality to the Tip Calculator:

• Sample code and instructions

2. Handling Errors

Activity: Fixing errors

In pairs, complete the following activities:

• Beginner: Bug hunt - syntax errors
• More advanced: Fix syntax errors in adding machine

3. Lab Time

• Finish activities from this morning;
• Assignments;
• Exercises: Javascript basics on Free Code Camp

Prep

System Requirements

• Install ES Lint for VS Code, or similar extension.
  • See: How to use Prettier with ESLint

Reading list

MDN:

• Number
• Arithmetic operators
• Template literals

Recommended exercises

• Javascript basics: Exercises 1-8
  • Start: Comment Your JavaScript Code
  • Complete and Stop (or not): Understanding Case Sensitivity in Variables