javascript - 在 MVC 中维护页面加载上复选框的状态

Question

我的问题与页面加载有关。我有以下代码:

Controller :

public ActionResult Index()
        {
     BD.isEmailON_OFF= db.Email_ON_OFF_T.Select(x=>x.isEmailON_OFF).FirstOrDefault().GetValueOrDefault();
}

[HttpPost]
        public ActionResult CheckEmail(string checkemails)
        {

            //calling Stored Procedure

            if (!string.IsNullOrWhiteSpace(checkemails)|| checkemails=="true" || checkemails=="false")
            {
                var checkemails1 = new SqlParameter("checkemails", checkemails);
                db.Database
                       .ExecuteSqlCommand("EXEC Sp_Email_on_off @checkemails", checkemails1);
            }


            return new JsonResult { };
        }

我有表IS_Email_on_OFF_T:

我将 isemailonoff 列插入为 0

功能:

我已打开电子邮件按钮和复选框。

打开电子邮件 -----> 变为关闭按钮并选中复选框。

关闭按钮----> 变为打开按钮和未选中的复选框。

到这里为止都正常工作。

打开电子邮件 -----> 变为关闭按钮并选中复选框。

page load(加载页面)

clicking on turn off button and not changing to turn on the button(1st attempt)(ISSUE)

点击关闭按钮(第 2 个)它会改变。

我试过的是:

观点:

@{
                if (Model.isEmailON_OFF == 0)
                {
                    <input type="button" value="Turn Email on" class="btn btn-success" id="btnturnemailonoff" />
                            <input type="checkbox" id="Chkemailonoff" style="float:right;" />
                }
                else
                {
                    <input type="button" value="Turn Email off" class="btn btn-success" id="btnturnemailonoff" />
                            <input type="checkbox" id="Chkemailonoff" style="float:right;" checked/>
                }
              }

按钮点击时的 AJAX 调用:

<script type="text/javascript">



    $(document).ready(function () {
               $('#btnturnemailonoff').on('click', function () {    


            var checked = !$(this).data('checked');
            var message = checked ? 'Turn Email ON' : 'Turn Email OFF';
            if (confirm("Do you want to " + message + "? ")) {



                $("#Chkemailonoff").prop('checked', checked);
                $(this).val(checked ? 'Turn Email Off' : 'Turn Email on')
                $(this).data('checked', checked);



                debugger;
                var url = '@Url.Action("CheckEmail", "BillingDetails")';
                $.ajax({
                    url: url,
                    type: "POST",
                    data: { checkemails: checked },
                    dataType: "json",
                    // traditional: true,
                    success: function () {
                        alert("ajax request to server succeed");
                    }
                });
            }//end of if

        });
    });





</script>

SP:

ALTER procedure [dbo].[Sp_Email_on_off]
@checkemails varchar(10)
As
Begin
if(@checkemails='false')
Update Email_ON_OFF_T set isEmailON_OFF=0
else
Update Email_ON_OFF_T set isEmailON_OFF=1

End

Answer 1

我对 AJAX 调用按钮点击进行了更改，它对我有用。

$(document).ready(function () {
        $('#btnturnemailonoff').on('click', function () {                              
            debugger;
             var checked = $("#Chkemailonoff").prop('checked');
            var message = checked ? 'Turn Email On' : 'Turn Email Off';
            if (confirm("Do you want to " + message + "? ")) {
                $("#Chkemailonoff").prop('checked', !checked);
                $(this).val(message)
                var url = '@Url.Action("CheckEmail", "BillingDetails")';
                $.ajax({
                    url: url,
                    type: "POST",
                    data: { checkemails: !checked },
                    dataType: "json",
                    success: function () {
                        //alert("ajax request to server succeed");
                    }
                });
            }




        });
    });