CheckBoxList全选单选切换

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<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="_Default" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
    <title></title>
    <script type="text/javascript">
        function check() {
            var oCBList = document.getElementById("<%=cblTest.ClientID %>");
            var tds = oCBList.getElementsByTagName("td");
            var inputs = oCBList.getElementsByTagName("input");
            var oTextBox = document.getElementById("tbTest");
            for (var i = 0; i < tds.length; i++) {
                if (oTextBox.value == tds[i].childNodes[1].innerText) {
                    inputs[i].checked = true;
                }
             }
        }
        function checkall() {
            var oCBList = document.getElementById("<%=cblTest.ClientID %>");
            var inputs = oCBList.getElementsByTagName("input");
            for (var i = 0; i < inputs.length; i++) {
                inputs[i].checked = true;
            }
        }
        function uncheckall() {
            var oCBList = document.getElementById("<%=cblTest.ClientID %>");
            var inputs = oCBList.getElementsByTagName("input");
            for (var i = 0; i < inputs.length; i++) {
                inputs[i].checked = false;
            }
        }
    </script>
</head>
<body>
    <form id="form1" runat="server">
    <div>
        <asp:TextBox ID="tbTest" runat="server"></asp:TextBox><br />
        <input id="Button1" type="button" value="Check" onclick="javascript:check();" /><br />
        <input id="Button2" type="button" value="Html_CheckAll" onclick="javascript:checkall();" /><br />
        <asp:Button ID="Button3" runat="server" Text="Aspx_UnCheckAll" OnClientClick="javascript:uncheckall();" /><br />
        <asp:CheckBoxList ID="cblTest" runat="server">
        <asp:ListItem>001</asp:ListItem>
        <asp:ListItem>002</asp:ListItem>
        <asp:ListItem>003</asp:ListItem>
        <asp:ListItem>004</asp:ListItem>
        <asp:ListItem>005</asp:ListItem>
        </asp:CheckBoxList>
        </div>
    </form>
</body>
</html>