Q: How do I call a server function from client-side code in WebSharper?

Annotate the server function with [ ] and call it asynchronously from client code marked with [ ], as shown in the Server.DoWork example where data is fetched and displayed reactively.

Question 1

How do I call a server function from client-side code in WebSharper?

Accepted Answer

Annotate the server function with [] and call it asynchronously from client code marked with [], as shown in the Server.DoWork example where data is fetched and displayed reactively.

Question 2

WebSharper vs Blazor: which is better for F# web apps?

Accepted Answer

WebSharper compiles to JavaScript and supports older browsers, while Blazor uses WebAssembly and is tightly integrated with .NET 5+. WebSharper is more mature for F#-first development, but Blazor might be easier for teams already in the Microsoft ecosystem.

Question 3

Can I use npm packages directly with WebSharper?

Accepted Answer

Not directly; you need WebSharper extensions for type-safe bindings or must create custom bindings using the WebSharper Interface Generator (WIG), which requires additional effort and expertise.

Question 4

How to handle routing in WebSharper multi-page applications?

Accepted Answer

Define a union type with [<EndPoint>] annotations to specify routes, then use Application.MultiPage to map endpoints to content, ensuring type-safe URL generation and linking, as demonstrated in the Endpoints example.

Question 5

Does WebSharper support real-time features like WebSockets?

Accepted Answer

The README doesn't explicitly mention WebSockets; support may be limited or require third-party libraries, so check the documentation or community extensions for updates on real-time capabilities.

Question 6

What are the performance trade-offs of compiling .NET to JavaScript?

Accepted Answer

WebSharper optimizes code output, but the JavaScript bundle can be larger due to .NET runtime inclusions, potentially affecting load times, though type safety often justifies this for complex applications.

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