Question

HEllo - 我在复选框选中（启用）或取消选中（禁用）时尝试启用/禁用文本框。使用这段代码，一旦选中/取消选中复选框，我就什么也没发生。这就是我所拥有的：

<%@ Control Language="C#" AutoEventWireup="true" CodeBehind="AssociationInfo.ascx.cs" Inherits="Administration.Modules.AssociationInfo" %>
<%@ Register Assembly="AjaxControlToolkit" Namespace="AjaxControlToolkit" TagPrefix="asp" %>
     <script type="text/javascript" language="javascript">
        function enableTextBox() {
            window.onload = function () {
                var check = document.getElementById("chkAssociation");
                check.onchange = function () {
                    if (this.checked == true)
                        document.getElementById("txtAddress").disabled = false;
                    else
                        document.getElementById("txtAddress").disabled = true;
                };
            };
        }
    </script>

    <div>
    <h2>Association Info</h2>
    <br />

      <asp:CheckBox Checked="false" ID="chkAssociation" runat="server" />&nbsp;&nbsp;
       <asp:TextBox ID="txtAddress" Text="Test" runat="server" />
    </div>

代码在Web用户控件中。这可能是为什么不能正常工作的原因吗？

感谢您的帮助

感谢大家提前帮助，Laziale

Answer 1

请关闭AutoPostBack。

<asp:CheckBox Checked="false" 
              OnChange="javascript:enableTextBox();" 
              ID="chkAssociation" 
              runat="server" />

编辑：试试这段代码，

<script type="text/javascript">
        window.onload = function() {
            var check = document.getElementById("<%=chkAssociation.ClientID %>");
            check.onchange = function() {
                if (this.checked == true)
                    document.getElementById("<%=txtAddress.ClientID %>").disabled = false;
                else
                    document.getElementById("<%=txtAddress.ClientID %>").disabled = true;
            };
        };
</script>        

<asp:CheckBox  Checked="false"   ID="chkAssociation" runat="server" />
<asp:TextBox ID="txtAddress" Enabled="false" Text="Test" runat="server" />

Answer 2

尝试“onclick”而不是“onchange” - 我相信这就是你要找的东西。

Answer 3

检查

1.如果选中了复选框，则文本框将被禁用

<script type="text/javascript">
function enableDisable(bEnable, textBoxID)
{
     document.getElementById(textBoxID).disabled = bEnable

}
</script>


 <asp:TextBox ID="t1" Text="" runat="server" />
<asp:CheckBox ID="chk1" Checked="false" onclick="enableDisable(this.checked, 't1');" runat="server" />

2.如果选中复选框，则启用文本框

 <script type="text/javascript">
function enableDisable(bEnable, textBoxID)
{
     document.getElementById(textBoxID).disabled = !bEnable

}
</script>
        <asp:TextBox ID="t1" Text="" runat="server" />
        <asp:CheckBox ID="chk1" Checked="true" onclick="enableDisable(this.checked, 't1');" runat="server" />

使用javascript检查复选框启用文本框

3 个答案: