JavaScript中未定义转发器标签clientID错误

我有一个中继器控制：

<asp:Repeater ID="repeater" runat="server" >
    <ItemTemplate>
        <tr>
            <td><asp:CheckBox class="checkbox" id="chkbox" runat="server" /></td>
             <td><asp:label ID="lblCode" runat="server" Text='<%#Eval("productCode")%>' /></td>
             <td><asp:Label ID="lbldesc" runat="server" Text='<%# Eval("productDesc") %>' /></td>
             <td><asp:TextBox ID="txtType" runat="server" Text='<%# Eval("productType") %>' /></td>
             <td><asp:TextBox ID="txtqty" runat="server" Text='<%#eval("productQty") %>' size="10" />
                <asp:label ID=lblqty runat="server" Text='<%#eval("productQty") %>' />
             </td>
             <td><asp:TextBox ID=txtPrice runat="server" Text='<%# eval("productprice") %>' class="text" Width="30px"/></td>
             <td>
              <asp:linkbutton ID="lnkEdit" runat="server"><img src="images/ico_edit_16.png" class="icon16 fl-space2" alt="" title="edit" /></asp:linkbutton> 
              <asp:linkbutton ID="LinkDelete" runat="server"><img src="images/ico_delete_16.png" class="icon16 fl-space2" alt="" title="delete" /></asp:linkbutton >
              <asp:linkbutton ID="LinkSettings" runat="server"><img src="images/ico_settings_16.png" class="icon16 fl-space2" alt="" title="settings" /></asp:linkbutton >
             </td>
        </tr>
    </ItemTemplate>
</asp:Repeater>

如果我只是传入任何带有客户端ID的文本框，它就会找到它，并且我能够在警报中显示结果，但是如果传入任何标签，我会在错误控制台中收到错误消息

错误：未定义ctl00\u内容占位符1\u列表表1\u中继器\u ctl00\u lblqty

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有人能告诉我如何解决这个问题吗？

如果我删除.id部分或不查看更新，这没有什么区别，你还没有做到这一点，但这可能是另一个错误，你的第一个问题是EditLabel参数上的单引号。我已将代码更改为你的建议。还是没有快乐。我将其更改为txtbxqty.Attributes.Add（“onblur”，“javascript:Editlabel（“+txtbxqty.ClientID+”）”），这将显示文本框值，但一旦添加标签，它就停止工作

innerText

仅为IE。改用

lbl.innerHTML

，或者查看alternative.Updated…..完成调试，推荐jQuery，处理这些愚蠢的错误。

 //need single quotes on js function
 txtbxqty.Attributes.Add("onblur", "javascript:Editlabel('" + lblqty.ClientID + "','" + txtbxqty.ClientID + "');")

 //no need for id
 cstext2.Append("var lbl = document.getElementById(qtylbl);")
 cstext2.Append("var txt = document.getElementById(txtbox);")
 cstext2.Append("alert(txt.value + ' ' + lbl.innerHtml);") //span don't have a value

Protected Sub repeater_ItemDataBound(ByVal sender As Object, ByVal e As System.Web.UI.WebControls.RepeaterItemEventArgs) Handles repeater.ItemDataBound
    If e.Item.ItemType = ListItemType.Item Or e.Item.ItemType = ListItemType.AlternatingItem Then
        Dim lblcode As Label = e.Item.FindControl("lblcode")
        Dim txtbxqty As TextBox = e.Item.FindControl("txtqty")
        Dim lblqty As Label = e.Item.FindControl("lblqty")
        Dim txtprice As TextBox = e.Item.FindControl("txtPrice")
        txtbxqty.Attributes.Add("onblur", "javascript:Editlabel(" + lblqty.ClientID + "," + txtbxqty.ClientID + ");")
    End If
End Sub

 //need single quotes on js function
 txtbxqty.Attributes.Add("onblur", "javascript:Editlabel('" + lblqty.ClientID + "','" + txtbxqty.ClientID + "');")

 //no need for id
 cstext2.Append("var lbl = document.getElementById(qtylbl);")
 cstext2.Append("var txt = document.getElementById(txtbox);")
 cstext2.Append("alert(txt.value + ' ' + lbl.innerHtml);") //span don't have a value