# UJS and IE

**URL:** <https://www.ruby-forum.com/t/ujs-and-ie/139111>\
**Category:** Rails\
**Created:** [May 30, 2008, 10:43pm UTC](https://www.ruby-forum.com/t/ujs-and-ie/139111 "2008-05-30T22:43:50Z")\
**Posts on this page:** 3\
**Page:** 1

<div class="post-metadata">

**Author:** ![Applejus](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/a/e5b9ba/32.png) [@Applejus](https://www.ruby-forum.com/u/Applejus)\
**Post date:** [May 30, 2008, 10:43pm UTC](https://www.ruby-forum.com/t/ujs-and-ie/139111/1 "2008-05-30T22:43:50Z")

</div>

Hello,

I got the latest UJS for RoR installed and running and also downloaded  
the  
latest prototype.js file. Now just by including the UJS javascript tag  
(:unobtrusive) I get an error in IE browser saying “‘Event’ is  
undefined”.

Anyone can help? Thanks!

–  
View this message in context:  
[http://www.nabble.com/UJS-and-IE-tp17567572p17567572.html](http://www.nabble.com/UJS-and-IE-tp17567572p17567572.html)  
Sent from the RubyOnRails Users mailing list archive at [Nabble.com](http://Nabble.com).

---

<div class="post-metadata">

**Author:** ![Applejus](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/a/e5b9ba/32.png) [@Applejus](https://www.ruby-forum.com/u/Applejus)\
**Post date:** [May 31, 2008, 4:21pm UTC](https://www.ruby-forum.com/t/ujs-and-ie/139111/2 "2008-05-31T16:21:41Z")

</div>

Applejus

On Fri, May 30, 2008 at 1:42 PM, Applejus [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid) wrote:

> I got the latest UJS for RoR installed and running and also downloaded the  
> latest prototype.js file. Now just by including the UJS javascript tag  
> (:unobtrusive) I get an error in IE browser saying “‘Event’ is undefined”.

I haven’t used UJS, but the error you’re getting is because prototype  
isn’t  
included. Just include :defaults

\<%= javascript\_include\_tag :defaults, ‘unobtrusive’ %\>

Brandon

* * *

Sessions by Collective Idea: Ruby on Rails training in a vacation  
setting  
[http://sessions.collectiveidea.com](http://sessions.collectiveidea.com)

---

<div class="post-metadata">

**Author:** ![Applejus](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/a/e5b9ba/32.png) [@Applejus](https://www.ruby-forum.com/u/Applejus)\
**Post date:** [June 2, 2008, 6:48am UTC](https://www.ruby-forum.com/t/ujs-and-ie/139111/3 "2008-06-02T06:48:29Z")

</div>

Hi,

The error still persists, even with defaults included…

Brandon K. wrote:

> > 
> 
> Sessions by Collective Idea: Ruby on Rails training in a vacation setting  
> [http://sessions.collectiveidea.com](http://sessions.collectiveidea.com)
> 
> >

–  
View this message in context:  
[http://www.nabble.com/UJS-and-IE-tp17567572p17593929.html](http://www.nabble.com/UJS-and-IE-tp17567572p17593929.html)  
Sent from the RubyOnRails Users mailing list archive at [Nabble.com](http://Nabble.com).