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Editorial Team
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Asked: 2026-05-17T14:53:16+00:00

I have a tree view control build dynamically. i want to change color of

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I have a tree view control build dynamically. i want to change color of the selected node
.one help me to write the script given below. and its work fine.

 <script type="text/javascript"  src="http://www.google.com/jsapi"></script>
<script type="text/javascript">
    google.load("jquery", "1.4.2");
    google.setOnLoadCallback(function() {
        //change cursor to hand when user mouseover tree nodes
        $(".TreeView1_0").mouseover(function() {
            $(this).css('cursor', 'pointer');
        });


        //unbold all nodes then bold the selected node to indicate it's selected
        $(".TreeView1_0").click(function() {
            $(".TreeView1_0").css('font-weight', 'normal');
            $(".TreeView1_0").css('color', 'black');
            $(".TreeView1_0").css('background-color', 'white');


            $(this).css('color', 'white');

            $(this).css("background-color", "blue");

        });
    });
</script>

Now i want to change the source file to the js file stored in script folder.And store selected node index and value in hidden fields.i have a source file JQuery1.4.1.js in script folder. i dont know what is the exact way of referencing to this js file. and i dont know how to retrieve selected node index and value

i changed the code to do that.the entire aspx code is shown below

<%@ 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&#8221;>

<html xmlns=”http://www.w3.org/1999/xhtml&#8221;>
<head id=”Head1″ runat=”server”>
<title></title>

   <script type="text/javascript" src="../../Scripts/JQuery1.4.1.js"></script>
  <script type="text/javascript">


        //change cursor to hand when user mouseover tree nodes
        $(".TreeView1_0").mouseover(function() {
            $(this).css('cursor', 'pointer');
        });


        //unbold all nodes ,then bold the selected node to indicate it's selected ,and store  selected node index and value to two hidden fields
        $(".TreeView1_0").click(function() {
            $(".TreeView1_0").css('font-weight', 'normal');
            $(".TreeView1_0").css('color', 'black');
            $(".TreeView1_0").css('background-color', 'white');
            $(this).css('color', 'white');
            $(this).css("background-color", "blue");

          // i am not sure about the two lines of code given below
            document.getElementById('hfvalue').value = $(this).value;
            document.getElementById('hfindex').value =$(this).index;

            $(this).css('color', 'white');

            $(this).css("background-color", "blue");

        });

</script>

</head>

<body>

<form id="form1" runat="server">
<div>
    <asp:TreeView ID="TreeView1" runat="server">
    </asp:TreeView>
</div>
<p>
    <asp:Button ID="Button1" runat="server" onclick="Button1_Click" Text="Button" />
    <asp:HiddenField ID="hfvalue" runat="server" />
    <asp:HiddenField ID="hfindex" runat="server" />
</p>
</form>

</body>
</html>

But the code is not working . i am a newbie. Any suggestions

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1 Answer

  1. Editorial Team

    I guess, first you need to make a small change in your script. Check out the following snippet to use document.ready –

    $(document).ready(function(){

       //change cursor to hand when user mouseover tree nodes

   $(".TreeView1_0").mouseover(function() {

       $(this).css('cursor', 'pointer');

   });

   //unbold all nodes ,then bold the selected node to indicate it's selected ,and store  selected node index and value to two hidden fields

   $(".TreeView1_0").click(function() {

       $(".TreeView1_0").css('font-weight', 'normal');

       $(".TreeView1_0").css('color', 'black');

       $(".TreeView1_0").css('background-color', 'white');

       $(this).css('color', 'white');

       $(this).css("background-color", "blue");

     // i am not sure about the two lines of code given below

       document.getElementById('hfvalue').value = $(this).value;

       document.getElementById('hfindex').value =$(this).index;

       $(this).css('color', 'white');

       $(this).css("background-color", "blue");

   });

    });

    Also, please make sure that the jquery script does get picked up properly, and the path you are using is appropriate. A simple way to verify this is to type the following into the address bar and see if the alert shows up a function

    javascript:alert($)

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