How to show Active Menu using JavaScript

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Hi,

In my web Application, i need to highlight the menu where the user is in. I tried using JS by Onclick, Obj.cssName="span"

but it doesn't works well, OnPostback inside highlighted menus(sub menu) it just lost their cssClass.

Even i tried with ServerSide code. Onclick menuList.cssClass="span",but noluck.
I'm using Linkbutton, Postback URL for menu links.

Here is my JS in my masterpage

XML

function setHidden(val)
    {
    //alert(val.id);
    document.getElementById('<%= hd.ClientID %>').value = val.id;
    OOK();
    }

    function OOK()
    {
    var objhd = document.getElementById('<%= hd.ClientID %>');
   // alert(objhd.value);
    if(objhd.value != "")
    {
    var a1 = document.getElementById(objhd.value);
    a1.className="red";
    }
    }

Here is my Content of MasterPage

XML

<body >

    <form id="form1" runat="server">

    <asp:HiddenField ID="hd" runat="server" />
    <div>
        <asp:ContentPlaceHolder id="ContentPlaceHolder1" runat="server">

        </asp:ContentPlaceHolder>
    </div>
    <ul id="menu">
    <li><a><asp:LinkButton ID="LinkButton1" runat="server" OnClientClick="setHidden(this);" PostBackUrl="~/Default.aspx">One</asp:LinkButton></a></li>
    <li><a><asp:LinkButton ID="LinkButton2" runat="server" OnClientClick="setHidden(this);" PostBackUrl="~/Default2.aspx">Two</asp:LinkButton></a></li>
    <li><a><asp:LinkButton ID="LinkButton3" runat="server" OnClientClick="setHidden(this);" PostBackUrl="~/Default3.aspx">Three</asp:LinkButton></a></li>
    <li><a><asp:LinkButton ID="LinkButton4" runat="server" OnClientClick="setHidden(this);" PostBackUrl="~/Default4.aspx">Four</asp:LinkButton></a></li>
</ul>

    </form>
</body>

If i gave
<body önload="OOK();">

while i click twice on an menu, it works !!
i can't guess what i does...!!

Posted 17-Apr-12 0:58am

J.Karthick

Updated 17-Apr-12 4:41am

v4

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Comments

ZurdoDev 17-Apr-12 8:01am

It is doubtful anyone can help you if you do not provide your code. You'll likely want to do this in server side so that it sets the CSS but you likely also have other CSS that is interfering.

J.Karthick 17-Apr-12 10:29am

what do you mean by interfering?
Am i need to bind another css class?

In my above code i tried setting highlight for an menu, but it just appears and disappears.
Is it possible to do it with client side alone ?
I tried it, but my Hiddenfield value lost after postback.

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vino2012 · Answer 1 · 2012-04-17T07:01:00

Sure this will help you.....

<%if (LoadPagename=="Default.aspx"){ %>
<table><tbody><tr><td><a href="Default.aspx"><img src="images/mnumm_over.jpg" height="29" width="182" border="0" style="cursor:pointer;" /></a></td></tr></tbody></table>
<%}else{ %>
<table><tbody><tr><td><a href="Default.aspx"><img src="images/mnumm.jpg" height="29" width="182" border="0" onmouseover="this.src='images/mnumm_over.jpg'"  önmouseout="this.src='images/mnumm.jpg'" style="cursor:pointer;" /></a></td></tr></tbody></table>
<%}%>

<%if (LoadPagename=="Default2.aspx"){ %>
<table><tbody><tr><td><a href="Default2.aspx"><img src="images/mnucm_over.jpg" height="29" width="182" border="0" style="cursor:pointer;" /></a></td></tr></tbody></table>
<%}else{ %>
<table><tbody><tr><td><a href="Default2.aspx"><img src="images/mnucm.jpg" height="29" width="182" border="0" onmouseover="this.src='images/mnucm_over.jpg'"  önmouseout="this.src='images/mnucm.jpg'" style="cursor:pointer;" /></a></td></tr></tbody></table>
<%}%>

<%if (LoadPagename=="Default3.aspx"){ %>
<table><tbody><tr><td><a href="Default3.aspx"><img src="images/mnuma_over.jpg" height="29" width="182" border="0" style="cursor:pointer;" /></a></td></tr></tbody></table>
<%}else{ %>
<table><tbody><tr><td><a href="Default3.aspx"><img src="images/mnuma.jpg" height="29" width="182" border="0" onmouseover="this.src='images/mnuma_over.jpg'"  önmouseout="this.src='images/mnuma.jpg'" style="cursor:pointer;" /></a></td></tr></tbody></table>
<%}%>

On your code behind file

protected void Page_Load(object sender, EventArgs e)
    {
        string LoadPagename;
        LoadPagename = System.IO.Path.GetFileName(Request.FilePath).ToLower();
    }

Inside If(condition){
// images for selected tab....
}
else
{
// images for unselected tab with mouse hover and out....
}
Change your image and its height,width.......