我正在使用jquery来查找ContentTemplate中的文本框控件。我一直收到错误:
当前上下文中不存在名称“txtUserName”
这是我的javascript:
function ShowAvailability() {
var myvar = $('#<%=txtUserName.ClientID %>').text();
$.ajax({
type: "POST",
url: "Register.aspx/CheckUserName",
data: '{userName: "' + $(myvar)[0].value + '" }',
contentType: "application/json; charset=utf-8",
dataType: "json",
success: OnSuccess,
failure: function (response) {
alert(response);
}
});
这是我的标记:
<asp:CreateUserWizard ID="RegisterUser" runat="server" EnableViewState="False" OnCreatedUser="RegisterUser_CreatedUser">
<WizardSteps>
<asp:CreateUserWizardStep ID="RegisterUserWizardStep" runat="server">
<ContentTemplate>
<div class="accountInfo">
<fieldset class="register">
<div>
UserName :
<asp:TextBox ID="txtUserName" runat="server" onkeyup="ShowAvailability()"></asp:TextBox>
<input id="btnCheck" type="button" value="Show Availability" onclick="ShowAvailability()" />
<br />
<span id="mesg"></span>
</div>
请帮忙。我似乎无法在任何地方找到解决方案。谢谢!
答案 0 :(得分:0)
不要试图选择它,而是让它作为参数出现:
function ShowAvailability(domObject) {
var myvar = domObject.val(); //switched from text() to val()
$.ajax({
type: "POST",
url: "Register.aspx/CheckUserName",
data: '{userName: "' + $(myvar)[0].value + '" }',
contentType: "application/json; charset=utf-8",
dataType: "json",
success: OnSuccess,
failure: function (response) {
alert(response);
}
});
然后在标记中使用jquery $(this)让文本框将自己的引用发送给函数:
<asp:TextBox ID="txtUserName" runat="server" onkeyup="ShowAvailability($(this))"></asp:TextBox>