What you'll learn

Blazor in ASP.NET Core 10 is SSR-first, which means JavaScript is a choice you make on purpose rather than a default you get for free. Get it wrong and you end up with broken hydration, lifecycle errors, and fragile components. In this course, JavaScript Interop in ASP.NET Core 10 Blazor, you'll gain the ability to apply JavaScript interop confidently across every render mode. First, you'll explore how render modes shape what interop is possible and when native Blazor is the better choice. Next, you'll discover how to call JavaScript from your components and expose .NET to JavaScript using patterns like module isolation, DotNetObjectReference, and JSImport. Finally, you'll learn how to bring real-world JavaScript libraries into your app without breaking SSR, avoid the antipatterns that show up in long-lived projects, and handle timing and errors across the boundary. When you're finished with this course, you'll have the skills and knowledge of JavaScript interop needed to build Blazor apps that stay fast, resilient, and easy to maintain.