Error: 'null' is null or not an object in JQuery RSS

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I am getting error in Jquery as 'null' or not an object.

I have declared the div tag values in jquery. but, still it is getting null object.

see my code below.

Master Page
-----------
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
    <title></title>

    <link type="text/css" rel="Stylesheet" href="Styles/Home.css" />

    <asp:ContentPlaceHolder ID="paneContentPlace" runat="server">


    </asp:ContentPlaceHolder>

</head>


ASPX Page
-------------

<asp:Content ID="Content3" ContentPlaceHolderID="paneContentPlace" runat="Server">

        <script language="javascript" type="text/javascript">
            $(document).ready(function () {
                $("div.ContainerPanel").toggle(   /*********** Error Place ('null' or not null object)******/
                function () {
                    $(this).parent().next("div.Content").show("slow");
                    $(this).attr("class", "ArrowClose");
                });
                alert("Hello Word");

            });
        </script>

        <style type="text/css">
        .ContainerPanel
{
 width:400px;
 border:1px;
 border-color:#1052a0;
 border-style:double double double double;
}
.collapsePanelHeader
{
    width: 400px;
    height: 30px;
    background-image: url('../images/bg-menu-main.png');
    background-repeat: repeat-x;
    color: #FFF;
    font-weight: bold;
}
.HeaderContent
{
 float:left;
 padding-left:5px;
}
.Content
{

}
.ArrowExpand
{
    background-image: url('../images/expand_blue.jpg');
    width: 13px;
    height: 13px;
    float: right;
    margin-top: 7px;
    margin-right: 5px;
}
.ArrowExpand:hover
{
 cursor:hand;
}
.ArrowClose
{
    background-image: url('../images/collapse_blue.jpg');
    width: 13px;
    height: 13px;
    float: right;
    margin-top: 7px;
    margin-right: 5px;
}
.ArrowClose:hover
{
 cursor:hand;
}

</style>

</asp:Content>
  <asp:UpdatePanel ID="upnl1" runat="server">
        <ContentTemplate>
  <div>
                <div id="ContainerPanel" class="ContainerPanel">
                    <div id="header" class="collapsePanelHeader">
                        <div id="dvHeaderText" class="HeaderContent">
                            jQuery Collapsible Panel1</div>
                        <div id="dvArrow" class="ArrowExpand">
                        </div>
                    </div>
                    <div id="dvContent" class="Content" style="display: none">
                        In Album List Page, we will display 3 albums in a row in Tiled format i.e. to repeat
                        In our case, it is LastItem.
                    </div>
                </div>
                <br />
                <div id="Div1" class="ContainerPanel">
                    <div id="Div2" class="collapsePanelHeader">
                        <div id="Div11" class="HeaderContent">
                            jQuery Collapsible Panel2</div>
                        <div id="Div3" class="ArrowExpand">
                        </div>
                    </div>
                    <div class="Content" style="display: none">
                        Test
                    </div>
                </div>
</div>
     </ContentTemplate>
    </asp:UpdatePanel>

Posted 22-Mar-13 0:15am

gani7787

Updated 22-Mar-13 0:23am

v2

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Comments

Shubhashish_Mandal 22-Mar-13 7:59am

In which explorer you have got this error?

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