Here is the logical breakdown of how to structure your CodeHS JavaScript script. Step 1: Define Constants
The Checkerboard V2 project offers significant educational value, particularly in the areas of:
A correct implementation will consistently produce an alternating pattern for any board size.
This problem is a classic introduction to and Modular Arithmetic . It asks you to draw a checkerboard pattern where the color of each square depends on its position (row and column).
: Iterate through the rows and columns. Use an if statement with the modulo operator to check the indices.
This alternating pattern continues until you have eight rows. Understanding this pattern is key to constructing it programmatically.
: The outer loop ( row ) controls the vertical position, inner loop ( col ) controls horizontal position.
The biggest hurdle is determining when to draw which color. You can solve this by adding the current row index and column index together: If (row + col) % 2 === 0 , draw Color A. If (row + col) % 2 !== 0 , draw Color B. Step-by-Step Code Implementation Strategy
Here is a detailed review of why this code works and the specific concepts being tested.
noStroke(); rect(col * 50, row * 50, 50, 50);
The specific requirement for "V2" is usually the dynamic coloring logic.
When you add the current row index and the current column index together, the sum dictates the color or value of that specific cell:
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Ensure the y coordinate uses the row variable, not col . Off-by-One Errors: Ensure your loops run exactly from to ROWS-1 or COLS-1 .
System.out.println(); // new line after each row
