mirror of
https://github.com/kjanat/livedash-node.git
synced 2026-02-13 11:29:31 +01:00
Kaj Kowalski
cd05fc8648
- Fix syntax errors in skills markdown files (.github/skills, .opencode/skills) - Change typescript to tsx for code blocks with JSX - Replace ellipsis (...) in array examples with valid syntax - Separate CSS from TypeScript into distinct code blocks - Convert JavaScript object examples to valid JSON in docs - Fix enum definitions with proper comma separation
33 lines
938 B
Markdown
33 lines
938 B
Markdown
---
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title: Use Explicit Conditional Rendering
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impact: LOW
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impactDescription: prevents rendering 0 or NaN
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tags: rendering, conditional, jsx, falsy-values
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---
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## Use Explicit Conditional Rendering
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Use explicit ternary operators (`? :`) instead of `&&` for conditional rendering when the condition can be `0`, `NaN`, or other falsy values that render.
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**Incorrect (renders "0" when count is 0):**
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```tsx
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function Badge({ count }: { count: number }) {
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return <div>{count && <span className="badge">{count}</span>}</div>;
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}
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// When count = 0, renders: <div>0</div>
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// When count = 5, renders: <div><span class="badge">5</span></div>
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```
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**Correct (renders nothing when count is 0):**
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```tsx
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function Badge({ count }: { count: number }) {
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return <div>{count > 0 ? <span className="badge">{count}</span> : null}</div>;
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}
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// When count = 0, renders: <div></div>
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// When count = 5, renders: <div><span class="badge">5</span></div>
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```
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