Always handle potentially null or undefined values defensively using appropriate JavaScript patterns. Choose the right technique based on your specific needs:
?.) for safe property access when the object might be undefined??) for fallback values, but test thoroughly as it may not work as expected in all contextsvalue ? value : fallback) when you need precise control over truthy/falsy behavior&&) for conditional execution when you need to check existence before proceedingExamples:
// Optional chaining for safe property access
i.description?.toLowerCase().includes(s)
// Explicit ternary for reliable fallbacks
const desktop = desktop_name ? desktop_name : desktop_addr;
// When nullish coalescing works as expected
const value = input ?? defaultValue;
Choose the pattern that provides the clearest intent and most reliable behavior for your specific use case. Test edge cases to ensure your chosen approach handles empty strings, null, and undefined values as expected.
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