JavaScript to .NET

What about the other way around? I would argue that calling .NET code from JavaScript isn’t a very common scenario, and if we find ourselves in that scenario, we might want to think about what we are doing.

I think that as Blazor developers, we should avoid using JavaScript as far as possible. There are, of course, times where JavaScript is the only option, and as I mentioned earlier, Blazm uses communication both ways.

There are three ways of doing a callback from JavaScript to .NET code:

• Static .NET method call
• Instance method call
• Component instance method call

Let's take a closer look at them.

Static .NET method call

To call a .NET function from JavaScript, we can make the function static and we also need to add the JSInvokable attribute to the method.

We can add a function such as this in the code section of a Razor component, or inside a class:

[JSInvokable]
public static Task<int[]> ReturnArrayAsync...