MVC 5 Html.ActionLink没有设置自动对焦？

$(document).ready(function() {
    $("#yourLinkId").focus();
});

using System;
using System.Linq.Expressions;
using System.Web.Mvc;

public static class HtmlExtensions
{
    public static MvcHtmlString ActionLinkWithAutofocus<TController>(
        this HtmlHelper<TController> htmlHelper,
        string linkText,
        Expression<Func<TController, ActionResult>> action,
        object htmlAttributes)
        where TController : Controller
    {
        var attributes = new { autofocus = "autofocus" };
        var mergedAttributes = HtmlHelper.AnonymousObjectToHtmlAttributes(htmlAttributes);
        mergedAttributes.Merge(attributes);

        return htmlHelper.ActionLink(linkText, action, mergedAttributes);
    }
}

@Html.ActionLinkWithAutofocus("Link Text", "Action", "Controller", null, null)