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BOOK: Beginning ASP.NET 4.5 : in C# and VB
This is the forum to discuss the Wrox book Beginning ASP.NET 4.5: in C# and VB by Imar Spaanjaars; ISBN: 978-1-118-31180-6
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Old September 24th, 2013, 11:25 AM
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Default Chapter 11 - jQuery

Maybe it is just me, but I having issues with the Try it Out: Your First jQuery Page. I get an error when loading the page:
Line: 834
Error: Object doesn't support this property or method

I changed the jquery to the normal vs. the min to help with the troubleshooting. Line 833 and 834 are as follows:

[code]
// Use the handy event callback
document.addEventListener( "DOMContentLoaded", completed, false );
[\code]

I am using jquery-2.0.3.js

This is my code from the jquery.aspx

[code]
<%@ Page Title="jQuery Demo" Language="C#" MasterPageFile="~/MaterPages/Frontend.master" AutoEventWireup="true" CodeFile="jQuery.aspx.cs" Inherits="Demos_jQuery" %>

<asp:Content ID="Content1" ContentPlaceHolderID="head" runat="Server">
</asp:Content>
<asp:Content ID="Content2" ContentPlaceHolderID="cpMainContent" runat="Server">
<input id="Button1" type="button" value="button" />
<script type="text/javascript">
$(document).ready(function () {
$('#MainContent').css('background-color', 'green')
$('#Button1').click(function () {
$('#MainContent').css('background-color', 'red')
.animate({ width: '100px', height: '800px' })
});
});
</script>
</asp:Content>
[\code]
(note the spelling of "MaterPages" in case you are copying the code)

Here is my masterpage....
[code]
<%@ Master Language="C#" AutoEventWireup="true" CodeFile="Frontend.master.cs" Inherits="MasterPages_Frontend" %>



<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<title></title>
<asp:ContentPlaceHolder ID="head" runat="server">
</asp:ContentPlaceHolder>
<script src="/Scripts/modernizr-2.6.2.js"></script>

</head>

<body>
<form id="form1" runat="server">
<asp:ScriptManager ID="ScriptManager1" runat="server" EnablePageMethods="true">
<Scripts>
<asp:ScriptReference Path="~/Scripts/jquery-2.0.3.js" />
</Scripts>
</asp:ScriptManager>
<div id="PageWrapper">
<header><a href="/"></a></header>
<nav>
<asp:Menu ID="Menu1" runat="server" CssClass="MainMenu" DataSourceID="SiteMapDataSource1" Orientation="Horizontal" StaticEnableDefaultPopOutImage="False"></asp:Menu>
<asp:SiteMapDataSource ID="SiteMapDataSource1" runat="server" ShowStartingNode="False" />
<asp:TreeView ID="TreeView1" runat="server" DataSourceID="SiteMapDataSource1" ShowExpandCollapse="False">
<LevelStyles>
<asp:TreeNodeStyle CssClass="FirstLevelMenuItems" />
</LevelStyles>
</asp:TreeView>
</nav>
<section id="MainContent">
<asp:ContentPlaceHolder ID="cpMainContent" runat="server">
</asp:ContentPlaceHolder>
</section>
<aside id="Sidebar">
Select a theme<br />
<asp:DropDownList ID="ThemeList" runat="server" AutoPostBack="True" OnSelectedIndexChanged="ThemeList_SelectedIndexCha nged">
<asp:ListItem>Monochrome</asp:ListItem>
<asp:ListItem>DarkGrey</asp:ListItem>
</asp:DropDownList>
<br />
<br />
<br />
<Wrox:Banner ID="Banner1" runat="server" DisplayDirection="Horizontal" />
</aside>
<footer>Footer Goes Here</footer>
</div>
</form>
</body>
</html>
[\code]

Any thoughts?

Thank you in advance.
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Old September 24th, 2013, 11:34 AM
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Default

Hi there,

When I copy and paste your code, it works fine for me. You're missing a few semi-colons but that shouldn't be a problem.

Two questions:

1. Which browser are you using and which version number does it have?

2. Are you sure you updated the correct master page? You point out the materpage spelling mistake, yet the code behind class of the posted master page seems fine.

Cheers,

Imar
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Author of Beginning ASP.NET 4.5 : in C# and VB, Beginning ASP.NET Web Pages with WebMatrix
and Beginning ASP.NET 4 : in C# and VB.
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Old September 24th, 2013, 12:30 PM
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First, thank you for the quick reply.

1. I am using IE8. Version 8.0.7601.17514.
2. I only have the one master page with the mispelled folder name.

I noticed my previous projects do not work either and have the same error.
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Old September 24th, 2013, 12:39 PM
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Update:

After a bit of searching I found on the jquery page that jquery 2.x is NOT supported in IE8. I downloaded jquery 1.10.2 and using that. Things are working much better now.

Thanks for the help!
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Old September 24th, 2013, 01:48 PM
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I was just going to suggest that ;-) I am currently updating the book for the upcoming VS 2013 / ASP.NET 4.5.1 releases and I am making note of it there. When you install the jQuery package, you automatically get the latest 2.x branch, so this is something to be aware of.

Cheers,

Imar
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Author of Beginning ASP.NET 4.5 : in C# and VB, Beginning ASP.NET Web Pages with WebMatrix
and Beginning ASP.NET 4 : in C# and VB.
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The Following User Says Thank You to Imar For This Useful Post:
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