typescript / beginner
Snippet
Optional Function Parameters
Function parameters can be marked as optional using the question mark syntax, allowing them to be omitted during calls.
snippet.ts
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function greet(name: string, title?: string) {return "Hello " + (title ? title + " " : "") + name;}
Breakdown
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title?: string
The 'title' parameter is optional; its value will be undefined if not provided.
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(title ? title + " " : "")
A ternary operator checks if title exists before using it in the string.