我收到了JavaScript错误(当然只在IE中),我无法弄清楚原因。我以为它是一个尾随的逗号或其他东西,但我找不到。我希望我能忽略一些东西,也许你们其中一个人可以看到我错过的东西。
我的控件和自定义验证器:
<asp:TextBox runat="server" ID="txtName" MaxLength="100" CssClass="styled" Columns="50" />
<asp:CustomValidator runat="server" ID="cvName" ErrorMessage="Enter a valid contact name or email address" ControlToValidate="txtName" Display="None" ValidationGroup="PlatformContact" ClientValidationFunction="doesUserExist" />
<asp:ValidatorCalloutExtender ID="vceName" runat="server" TargetControlID="cvName" WarningIconImageUrl="~/img/icons/ic_asterisk.gif" CssClass="validatorStyled" PopupPosition="Right" CloseImageUrl="~/img/icons/ic_x_close_orange.png" />
<asp:RequiredFieldValidator runat="server" ID="valName" ErrorMessage="Enter a contact name or email address" ControlToValidate="txtName" Display="None" ValidationGroup="PlatformContact" />
<asp:ValidatorCalloutExtender ID="vceNameRequired" runat="server" TargetControlID="valName" WarningIconImageUrl="~/img/icons/ic_asterisk.gif" CssClass="validatorStyled" PopupPosition="Right" CloseImageUrl="~/img/icons/ic_x_close_orange.png" />
这是我正在使用的JavaScript / jQuery:
<script language="javascript" type="text/javascript">
var userExists = true;
function doesUserExist(source, args) {
var txtName = $('#<%= txtName.ClientID %>').val();
$.ajaxSetup({ cache: false });
$.ajax({
type: "POST",
contentType: "application/json",
data: "{name:'" + txtName + "'}",
url: "ManageMyContacts.aspx/DoesUserExist",
dataType: "json",
success: function (result) {
userExists = result.d;
},
error: function (XMLHttpRequest, textStatus, errorThrown) {
//Something bad happened,redirect to login page
window.location.href = '<%= ResolveUrl("~/Default.aspx") %>';
}
});
args.IsValid = userExists;
}
</script>
非常感谢任何见解。
编辑:JavaScript错误
消息:&#39; controltovalidate&#39;是null或不是对象
这是WebMethod I用户检查用户名(在后面的代码中)
[WebMethod(EnableSession = true)]
public static bool DoesUserExist(string name)
{
ManageMyContactsService service = new ManageMyContactsService();
int index = name.IndexOf("[") + 1;
if (index > 0)
{
string email = name.Substring(index, name.Length - (index + 1));
return service.DoesUserExist(email);
}
else if (name.IndexOf("@") == -1)
return false;
else
return service.DoesUserExist(name);
}
我注意到doUserExist函数由于某种原因被调用了两次,有人可以从这段代码中说出原因吗?
答案 0 :(得分:0)
似乎UpdatePanel导致第二次ajax调用并导致IE抛出JS错误。在其他浏览器中工作得很好但不是IE7 / 8!
希望帮助有类似问题的人。