# Ajax error on Safari

**URL:** <https://www.ruby-forum.com/t/ajax-error-on-safari/124891>\
**Category:** Rails\
**Created:** [January 3, 2008, 3:57pm UTC](https://www.ruby-forum.com/t/ajax-error-on-safari/124891 "2008-01-03T15:57:44Z")\
**Posts on this page:** 1\
**Page:** 1

<div class="post-metadata">

**Author:** ![vapor](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/v/5e9695/32.png) [@vapor](https://www.ruby-forum.com/u/vapor)\
**Post date:** [January 3, 2008, 3:57pm UTC](https://www.ruby-forum.com/t/ajax-error-on-safari/124891/1 "2008-01-03T15:57:44Z")

</div>

Whenever page.hide ‘header’ is called from controller, it shows  
TypeError: value undefined … not an object.

What could be wrong?  
Works fine on FF and IE