I was hoping to use your component to catch when the browser window is closed so that I can clear some values in local storage in my web assembly project.
I initialise thus:

builder.Services.AddBeforeUnload();

Then in index.razor I do the following:

@code
{
    protected override void OnInitialized()
    {
        PageUnloaded.BeforeUnloadHandler += BeforeUnloadHandler;
    }

    public void Dispose()
    {
        PageUnloaded.BeforeUnloadHandler -= BeforeUnloadHandler;
    }

    public void BeforeUnloadHandler(object? sender, BeforeUnloadArgs args)
    {
        LocalStorage.RemoveItemAsync( "KeyName" );        
    }
}

If I set a breakpoint on all three methods, I get a breakpoint on OnInitialized when my application starts but don't get a breakpoint on Dispose nor BeforeUnloadHandler when the browser is closed.

Am I missing something?

Andy

Hmm, it's not working for me. I added it in my client's Paogram.cs, and inject, just as the example. After I implement and attach a function to beforeUnload.BeforeUnloadHandler, shouldn't (in my browser console) window.beforeunload have a value? It does not for me.

Hi, this nugget works perfectly for any browser in windows but I can't make it work on iPad.

Is there any workaround or any hint to get it to work in iOs?

Thanks!

This is exactly what I need (I have no idea why the Blazor folk didn't include it!), but as client-side Blazor isn't released yet we can't use it for production apps -- we're doing everything server-side. Any thought to making this SSB-friendly?