How to use Javascript in .NET MAUI Blazor App Hybrid

Question

when ever i try to put javascript link in .NET MAUI Blazor App Hybrid it says "Script tags should not be placed inside components because they cannot be updated dynamically."

Please help

i want to use javascript in .NET MUAI Blazor App Hybrid

Answer 1

You should try to use JavaScript using the modular approach.

Let's assume you have file hello.js which contain functions like below:

export function helloWorld (name) {
    console.log("Hello "+ name);
}

Try creating an interop for your JS file like:

public class Interop : IDisposable
{
    private readonly string _filePath;
    protected readonly IJSRuntime _jsRuntime;
    private Task<IJSObjectReference> _module;
    
    public Interop(IJSRuntime jsRuntime)
    {
        _filePath = filePath;
        _jsRuntime = jsRuntime;
    }
    
   public Task<IJSObjectReference> Module => _module ??= _jsRuntime.InvokeAsync<IJSObjectReference>("import", "./hello.js").AsTask();
    
    //create a method to call function from the JS file
    public async void SayHelloWorld(string name)
    {
        var module = await Module;
        await module.InvokeVoidAsync("helloWorld", name);
    }
    
    public void Dispose()
    {
        if (_module is not null)
        {
            ((IDisposable)_module).Dispose();
        }
    }
}

then use the js function like:

new Interop(JSRuntime).SayHelloWorld("Adam");