@page "/jsInterop"
@inject IJSRuntime jsRuntime

<h3>JSinterop</h3>

<button type="button" class="btn btn-primary"
 onclick="@setLocalStorage()">
    Trigger JavaScript Prompt
</button>

@code{

public object setLocalStorage()
{
    return jsRuntime.InvokeAsync<object>("interop.setItem", "username",
"Aymen");
}
}


window.interop = {

    setItem: function (name, value) {

        window.localStorage[name] = value;
        return value;
    },

};