$.ajax({
    url: '/ControllerName/ActionName',
    type: 'POST',
    data: { /* 数据 */ },
    success: function(response) {
        // 处理响应
    }
});

var url = '@Url.Action("ActionName", "ControllerName")';
$.ajax({
    url: url,
    type: 'POST',
    data: { /* 数据 */ },
    success: function(response) {
        // 处理响应
    }
});

<script>
    var myApp = myApp || {};
    myApp.urls = myApp.urls || {};
    myApp.urls.someAction = '@Url.Action("ActionName", "ControllerName")';
</script>
<script src="your-external-script.js"></script>

$.ajax({
    url: myApp.urls.someAction,
    type: 'POST',
    data: { /* 数据 */ },
    success: function(response) {
        // 处理响应
    }
});

<button id="myButton" data-url="@Url.Action("ActionName", "ControllerName")">提交</button>

$('#myButton').click(function() {
    var url = $(this).data('url');
    $.ajax({
        url: url,
        type: 'POST',
        data: { /* 数据 */ },
        success: function(response) {
            // 处理响应
        }
    });
});

var url = '@Url.Action("ActionName", "ControllerName", new { id = "__id__" })';
url = url.replace('__id__', actualId);

$.ajax({
    url: url,
    // 其他配置
});

@{
    ViewBag.Title = "AJAX 示例";
}

<button id="loadData" data-url="@Url.Action("GetData", "Sample")">加载数据</button>
<div id="result"></div>

@section scripts {
    <script>
        $(function() {
            $('#loadData').click(function() {
                var $button = $(this);
                $.ajax({
                    url: $button.data('url'),
                    type: 'GET',
                    dataType: 'json',
                    success: function(data) {
                        $('#result').html(data.message);
                    },
                    error: function(xhr, status, error) {
                        $('#result').html('错误: ' + error);
                    }
                });
            });
        });
    </script>
}

public class SampleController : Controller
{
    public JsonResult GetData()
    {
        return Json(new { message = "数据加载成功！" }, JsonRequestBehavior.AllowGet);
    }
}