Are there any potential pitfalls to be aware of when implementing number restrictions in input fields for a Sudoku game with PHP, HTML, and CSS?

When implementing number restrictions in input fields for a Sudoku game, a potential pitfall to be aware of is that users may try to input non-numeric characters or numbers outside of the valid range (1-9). To solve this issue, you can use JavaScript to restrict user input to only allow numbers between 1 and 9. 

<input type="number" min="1" max="9" step="1">

Keywords

input fields number restrictions Sudoku game PHP HTML CSS

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