您可以从一个jQuery选择基于喜欢这里的例子中，ID月底访问控制

You can access the control from a jQuery selector based on the end of the id like the example here:

<asp:CheckBox ID="chkEnable" Text="My Checkbox" runat="server" />
<script type="text/javascript">
    $(function() {
        var checked = $("input[id$=chkEnable]").attr("checked");

    });
</script>

下面是对确切的事情了一篇文章：
http://weblogs.asp.net/joelvarty/archive/2009/02/09/jquery-get-a-handle-on-a-server-element-in-javascript-without-using-lt-elem-clientid-gt.aspx

Here's an article for the exact thing: http://weblogs.asp.net/joelvarty/archive/2009/02/09/jquery-get-a-handle-on-a-server-element-in-javascript-without-using-lt-elem-clientid-gt.aspx