This source code is an experiment in calling WebAssembly from JavaScript.

The call sequence is as follows:

1. Open the Counter page from the menu (loads the Counter.razor component)

1-1. The OnAfterRenderAsync method is triggered

• The JavaScript file is loaded.
• The addHandlers function in JavaScript is executed.

1-2. In the addHandlers function, a click event is bound to the element with the btn ID.

2. Click the [WebAssembly Execute] button

2-1. The returnArrayAsync function in JavaScript is called.

• The ReturnArrayAsync method in WebAssembly is invoked.

2-2. The ReturnArrayAsync method in the Razor component is executed, and the value passed to the FromResult method is returned to the caller.

2-3. The value returned by the ReturnArrayAsync method in WebAssembly is output to the console log.