Ajax響應不defeined

Question

我是當它涉及到AJAX相當綠色，我試圖從後面功能的ASP.Net代碼的電郵地址

當使用下面的代碼我收到錯誤的每這個問題的標題。

這是我使用

$('.txtRequester').focusout(function() { 
console.log("textBox has lost focus"); 
function ShowCurrentTime() { 
$.ajax({ 
    type: "POST", 
    url: "Default.aspx/FindEmailAddress", 
    data: '{id: "' + $("txtRequester").val + '" }', 
    contentType: "application/json; charset=utf-8", 
    dataType: "json", 
    success: OnSuccess, 
    failure: function (response) { 
    alert(response.d); 
    } 
    }); 
} 
    function OnSuccess(response) { 
    alert(response.d); 
    } 
}); 

這是從這個網站的代碼改編的代碼。

ASP.Net Snippets

當改變線

success: OnSuccess到success: alert(response)或success: alert(data)

我得到的錯誤，但如果我用success: alert("ok")我得到的消息說好了，所以我懷疑，我得到進入下面的功能。

<System.Web.Services.WebMethod()> _ 
Public Shared Function FindEmailAddress(ByVal id As String) As String 
Dim response As String = GetEmail(id) 
Return response 
End Function 

如果有人幫助我，讓我知道我在哪裏出錯，我將非常感激。

謝謝

Answer 1

你還沒有調用函數這就是爲什麼它永遠不會被調用。

$('.txtRequester').focusout(function() { 
     console.log("textBox has lost focus"); 
     ShowCurrentTime(); 

    }); 

    function ShowCurrentTime() { 

     $.ajax({ 
      type: "POST", 
      url: "Default.aspx/FindEmailAddress", 
      data: '{id: "' + $("txtRequester").val() + '" }', 
      contentType: "application/json; charset=utf-8", 
      dataType: "json", 
      success: function (response) { 
       Onsuccess(response); 
      }, 
      failure: function (response) { 
       alert(response.d); 
      } 
     }); 
    } 
    function OnSuccess(response) { 
     alert(response.d); 
    } 

這將幫助:)

Answer 2

我覺得你可以，因爲我覺得有一個由你使用錯誤的語法如下使用此代碼檢查故障狀態。

$('.txtRequester').focusout(function() { 
     console.log("textBox has lost focus"); 
     function ShowCurrentTime() { 

      $.ajax({ 
       type: "POST", 
       url: "Default.aspx/FindEmailAddress", 
       data: JSON.stringify({id: ' + $(".txtRequester").val() + ' }), 
       contentType: "application/json; charset=utf-8", 
       dataType: "json", 
       success: function(data, status, header){ 
       console.log(data); 
       }, 
       error: function (response) { 
        alert(response.d); 
       } 
      }); 
     } 

    }); 

那麼你肯定會得到錯誤的迴應，如果你的成功不會命中。

Answer 3

使用AJAX直接，

$('.txtRequester').focusout(function() { 
    console.log("textBox has lost focus"); 

    var cond = $(".txtRequester").val(); 

     $.ajax({ 
      type: "POST", 
      url: "Default.aspx/FindEmailAddress", 
      data: {id:cond}, 
      contentType: "application/json; charset=utf-8", 
      dataType: "json", 
      success: function(response){ 
       alert(response.d); 
      }, 
      failure: function (response) { 
       alert(response.d); 
      } 
     }); 


}); 

Answer 4

變化$('.txtRequester')到$('#txtRequester')

和

變化$("txtRequester").val到$('#txtRequester').val()