How do I share jQuery script between pages?

what is the best way to share jQuery code between pages? this is the situation:

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I have several different pages that goes this way (pseudo code)

 <% render "content/link" , collection => required_links %>

In the "content/link" partial

 <div class="element_to_be_changed"/>

Currently in EVERY PAGE that renders the partial, i call

 jQuery.('.element_to_be_changed')... effect that i want...

This strik开发者_开发百科es me as unscalable, but i am not sure what is the best way to handle it. anyone has any ideas?

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If it is exactly the same on each page put it in an external script and include the script in the pages that use it.