I vahe view form, this form have:
<%= link_to day, root_path(:day => day), :id => 'link', :class => 'active_link' %>
This link reneder this form with day parameter and items on this form rendered with this parameter. I want that after clicking on this link, after re-rendering form - class 'active_link' removed. How can I make it?
P.S: this is link for item (day item from collection).
This is a view logic problem, not a JavaScript/jQuery problem. You are using a normal link to change the day parameter and re-render the entire page. Based on the only line of code you are showing us, I'm guessing your view loops through a bunch of dates and prints a link out for each one. The problem is, you are assigning the active_link class to all of the day links in your view. "Fixing" this problem with jQuery in the browser after the page loads is the wrong approach; instead fix your view logic to only assign the active_link class to the one correct link (and ditch the non-unique 'link' ids).
In your controller:
@active_day = params[:day]
In your view:
<% days.each do |day| %>
<%= link_to day, root_path(:day => day), :class => (day == @active_day ? 'active_link' : '') %>
<% end %>
Obviously, you'll need to tweak that code some to work in your app - you haven't shown enough code for me to write a working code solution.
You can do:
$('a.active_link').click(function(){
$(this).removeClass('active_link');
});
I'm no expert of ruby, but this works if your link is rendered as
<a id='link' class='active_link'></a>
