# RJS visual effect

**URL:** <https://www.ruby-forum.com/t/rjs-visual-effect/142967>\
**Category:** Rails\
**Created:** [July 14, 2008, 3:01am UTC](https://www.ruby-forum.com/t/rjs-visual-effect/142967 "2008-07-14T03:01:11Z")\
**Posts on this page:** 4\
**Page:** 1

<div class="post-metadata">

**Author:** ![jturney](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/j/e99b99/32.png) [@jturney](https://www.ruby-forum.com/u/jturney)\
**Post date:** [July 14, 2008, 3:01am UTC](https://www.ruby-forum.com/t/rjs-visual-effect/142967/1 "2008-07-14T03:01:11Z")

</div>

def show\_add\_user  
if(request.xhr?)  
render :update do |rjs|  
rjs.replace\_html :add\_user\_form, :partial =\> ‘form’  
end  
else  
redirect\_to\_index  
end  
end

How do I add a visual effect to that?

Thanks

---

<div class="post-metadata">

**Author:** ![jturney](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/j/e99b99/32.png) [@jturney](https://www.ruby-forum.com/u/jturney)\
**Post date:** [July 14, 2008, 10:56am UTC](https://www.ruby-forum.com/t/rjs-visual-effect/142967/2 "2008-07-14T10:56:07Z")

</div>

> ```
> render :update do |rjs|
> rjs.replace_html :add_user_form, :partial => 'form'
> 
> ```

```
         rjs.visual_effect(:highlight, "id_of_whatever", :duration

```

=\> 0.5)

---

<div class="post-metadata">

**Author:** ![jturney](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/j/e99b99/32.png) [@jturney](https://www.ruby-forum.com/u/jturney)\
**Post date:** [July 14, 2008, 6:13pm UTC](https://www.ruby-forum.com/t/rjs-visual-effect/142967/3 "2008-07-14T18:13:24Z")

</div>

Thorsten M. wrote:

> > � � � render :update do |rjs|  
> > � � � � � rjs.replace\_html :add\_user\_form, :partial =\> ‘form’
> 
> ```
> rjs.visual_effect(:highlight, "id_of_whatever", :duration
> 
> ```
> 
> =\> 0.5)

I’m getting this alert…

RJS Error:

ReferenceError: Effect is not defined

Thanks!

---

<div class="post-metadata">

**Author:** ![jturney](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/j/e99b99/32.png) [@jturney](https://www.ruby-forum.com/u/jturney)\
**Post date:** [July 14, 2008, 6:26pm UTC](https://www.ruby-forum.com/t/rjs-visual-effect/142967/4 "2008-07-14T18:26:37Z")

</div>

On 14 Jul 2008, at 17:13, Justin To wrote:

> RJS Error:
> 
> ReferenceError: Effect is not defined

You’re probably not loading the scriptaculous javascript files (you’ll  
need at least effects.js)

Fred