Three ways we use the modulo operation example cannot run #679
Description
Describe the bug
advance button output unchanged
To Reproduce
Steps to reproduce the bug:
- Go to 'lesson-15-modulo‘
- Click on 'advance()'
- See traffic light unchanged
Expected behavior
traffic light change
Information about your device (please complete the following information):
- Operating System: [ Arch Linux ]
- Browser: [ FireFox ]