Private class fields are finally coming to JavaScript with no less than three separate TC39 proposals that define the new capabilities.

Instantiating Blazor Classes If you have a class in your Blazor code and want to call a method on an instantiated version of it from JavaScript code, you can. The problem is, however, that you can't ...

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If you want to learn to create relatively simple online games using Javascript, then the HTML5 Game From Scratch Step By Step Learning JavaScript course is a great place to start.