mARTin
d92a8c7210
- Added 'onDelete' and 'onNotes' support to TaskItem. - Implemented hover actions (Delete and Notes icons) for tasks. - Added Notes Modal for editing task markdown content. - Simplified navigation animation to remove blank flash (single-phase slide-in). - Fixed syntax error in updateTask function. - Updated styles for modal and task actions.
41 lines
980 B
Markdown
41 lines
980 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 (
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<div>
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{count && <span className="badge">{count}</span>}
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</div>
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)
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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 (
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<div>
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{count > 0 ? <span className="badge">{count}</span> : null}
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</div>
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)
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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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