JavaScript error in Browser-Link

Question

I am working on a project that a former colleague has made. If I run this ASP MVC 4 application in Firefox everything works fine but, when I run it on Internet Explorer 9 I get this weird error:

It says there is a error in the SignalR JavaScript Library but I never heard of this. It breaks into a JS file that is not even in the solution.

This SignalR extension is not installed.

All the references in my views:

<script type="text/javascript" src="~/Scripts/jquery-1.7.1.min.js"></script>
<script type="text/javascript" src="~/Scripts/perso.js"></script>
<script src="../../Scripts/jquery-1.7.1.js" type="text/javascript"></script>

UPDATE

I have found the problem, in my console log it breaks on this error:

TypeError: a[0] is undefined @ browserLink:37

This occurs in my jQuery files. I have updated them with the newest version but no success.

I have no idea how to fix this, any ideas?

/// <reference path="jquery-1.7.1.js" /> /// <reference path="jquery-ui-1.8.20.js" /> /// <reference path="jquery.validate.js" /> /// <reference path="jquery.validate.unobtrusive.js" /> /// <reference path="knockout-2.1.0.debug.js" /> /// <reference path="modernizr-2.5.3.js" /> This is added above. Don't use it tho. Should I remove it? — Nanou Ponette
– Nanou Ponette, Commented Nov 25, 2013 at 9:26
The image u shared is of Visual studio. Its nothing with IE9 — Zaheer Ahmed
– Zaheer Ahmed, Commented Nov 25, 2013 at 11:05

ToastyMallows · Accepted Answer · 2013-12-10 21:21:33Z

40

I imagine that you're using Visual Studio 2013? If so, there's a new feature called Browser Link, it's enabled by default. I just upgraded to VS2013 as well and I'm getting a lot of errors related to Browser Link, when I disable it everything works perfectly.

Here's some more information about Browser Link and how to disable it: http://blogs.msdn.com/b/webdev/archive/2013/06/28/browser-link-feature-in-visual-studio-preview-2013.aspx

answered Dec 10, 2013 at 21:21

ToastyMallows

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2 Comments

DreamTeK Over a year ago

Another Microsoft special! #BrokenByDesign

Jagd Over a year ago

For VS 2017, in the debug toolbar there is a dropdown next to the "Refresh Linked Browsers" button. Click the dropdown and then you'll see the "Enable Browser Link" option.

Zaheer Ahmed · Accepted Answer · 2013-11-25 11:03:32Z

0

One possible reason, duplication of jQuery file. As you incldued jQuery file twice which cause conflict and jQuery stops working:

<script type="text/javascript" src="~/Scripts/jquery-1.7.1.min.js"></script>
<script type="text/javascript" src="~/Scripts/perso.js"></script>
<script src="../../Scripts/jquery-1.7.1.js" type="text/javascript"></script>

so replace it with:

<script type="text/javascript" src="~/Scripts/jquery-1.7.1.min.js"></script>
<script type="text/javascript" src="~/Scripts/perso.js"></script>

answered Nov 25, 2013 at 11:03

Zaheer Ahmed

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1 Comment

Nanou Ponette Over a year ago

Yes, I cleaned it up a bit but I still get the error on 2 of the 4 pages. I don't know why.

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