How do you handle decimal prices in a food ordering app?
Calculate the total normally, then format with toFixed(2): total.toFixed(2). This ensures two decimal places (e.g., 150.50 instead of 150.5). Use parseFloat when reading prices to avoid string concatenation.
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More FAQs in Food Ordering App: Edge Cases and Testing
Empty cart (show message), no search results (show message), quantity 0 (remove from cart), decimal prices (use toFixed), clear cart button, and checkout confirmation. These show production-readiness.
Test manually: add items to cart, change quantity, remove items, search, apply filters, verify empty cart message, verify no results message, clear cart, and checkout. Test each feature and edge case before submitting.
Check if the cart is empty (return early). Calculate the total. Show a confirmation (alert or modal). Clear the cart after confirmation. Disable checkout if the cart is empty.
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