javascript / beginner
Snippet
Logical OR (||) for Default Content
You can use the logical OR operator (||) in JSX to provide a fallback value. If the first value is falsy (like null or undefined), the second value will be displayed instead.
snippet.js
javascript
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function Welcome({ username }) {return <h1>Welcome, {username || 'Guest'}!</h1>;}
react
Breakdown
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{username || 'Guest'}
Checks if username exists; if not, it defaults to the string 'Guest'.