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Web Development with Blazor

You're reading from   Web Development with Blazor A practical guide to building interactive UIs with C# 12 and .NET 8

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Product type Paperback
Published in Apr 2024
Publisher Packt
ISBN-13 9781835465912
Length 366 pages
Edition 3rd Edition
Languages
Tools
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Author (1):
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Jimmy Engström Jimmy Engström
Author Profile Icon Jimmy Engström
Jimmy Engström
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Toc

Table of Contents (22) Chapters Close

Preface 1. Hello Blazor FREE CHAPTER 2. Creating Your First Blazor App 3. Managing State – Part 1 4. Understanding Basic Blazor Components 5. Creating Advanced Blazor Components 6. Building Forms with Validation 7. Creating an API 8. Authentication and Authorization 9. Sharing Code and Resources 10. JavaScript Interop 11. Managing State – Part 2 12. Debugging the Code 13. Testing 14. Deploying to Production 15. Moving from, or Combining with, an Existing Site 16. Going Deeper into WebAssembly 17. Examining Source Generators 18. Visiting .NET MAUI 19. Where to Go from Here 20. Other Books You May Enjoy
21. Index

.NET to JavaScript

Calling JavaScript from .NET is pretty simple. There are two ways of doing this:

  • Global JavaScript
  • JavaScript isolation

We will go through both ways to see what the difference is.

Global JavaScript (the old way)

To access the JavaScript method, we need to make it accessible. One way is to define it globally through the JavaScript window object. This is a bad practice since it is accessible by all scripts and could replace the functionality in other scripts (if we accidentally use the same names).

What we can do, for example, is use scopes, create an object in global space, and put our variables and methods on that object so that we lower the risk a bit, at least.

Using a scope could look something like this:

<script>
window.myscope = {};
window.myscope.methodName = () => { alert("this has been called"); }
</script>

We create an object with the name myscope. Then, we declare a method on that...

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