.net js调用后台事件

// 前端JavaScript代码
function callBackendEvent() {
    var xhr = new XMLHttpRequest();
    xhr.open('POST', '/api/your-endpoint', true);
    xhr.setRequestHeader('Content-Type', 'application/json');
    xhr.onreadystatechange = function () {
        if (xhr.readyState === 4 && xhr.status === 200) {
            console.log(xhr.responseText);
        }
    };
    var data = JSON.stringify({ key: 'value' });
    xhr.send(data);
}

// 后端.NET Core控制器代码
[HttpPost]
public IActionResult YourEndpoint([FromBody] YourModel model)
{
    // 处理逻辑
    return Json(new { success = true, message = "事件已处理" });
}

// 后端.NET Core Hub类
public class YourHub : Hub
{
    public async Task SendMessage(string user, string message)
    {
        await Clients.All.SendAsync("ReceiveMessage", user, message);
    }
}

// 前端JavaScript代码
const connection = new signalR.HubConnectionBuilder()
    .withUrl("/your-signalr-hub")
    .build();

connection.on("ReceiveMessage", (user, message) => {
    console.log(`${user}: ${message}`);
});

connection.start().then(() => {
    connection.invoke("SendMessage", "User1", "Hello World!");
});