Spot a parity error in a row

JavaScript Beginner robot ages 11-13 From CS Unplugged

The problem

In the parity magic trick, every row should have an EVEN number of black cards. Write a function hasParityError(row). row is made of B (black) and W (white). Give back true if the row has an error (an odd number of B), and false if it is fine.

You will practice: counting, remainder (%), true and false

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CC BY-SA 4.0

Adapted from a CS Unplugged programming challenge by the University of Canterbury Computer Science Education Research Group, licensed CC BY-SA 4.0.

Original challenge · License: CC BY-SA 4.0

Changes: Rewritten in our own words as a function with tests, hints and steps, in Python and JavaScript, by Open Cosmos. This version is also CC BY-SA 4.0.