render page update

[view]
   function ajax_create(act, pos, goals) {
     $.ajax({
        url:  '/goals/'+act,
        type: 'POST',
        data: goals,
        dataType:  'html',
        success:function(html){
          $(pos).after(html);
          $('td.goal_del').unbind('click', goal_del).bind('click', goal_del);
          $('td.goal_up_tmp').unbind('click', goal_up ).bind('click', goal_up);
          $('td.goal_down_tmp').unbind('click', goal_down).bind('click', goal_down);
        }
      });
   }

[controller]
render :partial => 'member/temp_goal', :locals => {:g => new_goal}


[view]
<%= observe_field :target_type_target_type_id,     :on => "change",
  :url => {:action => :update_target_list},
  :with => "{target_type_id: value, target_cat_id: $('target_type_target_cat_id').value}"%>

(用page 寫 js)
[controller]
  render :update do |page|
    page.replace_html 'target_type_target_id', :partial => 'target_type_select', :locals => {:types => target_list}
  end


[view]
   function test() {
     $.ajax({
        url:  '/alert/test',
        type: 'GET',
        success : function(html){
          alert(html);
        }
      });
   }

[controller]
    render :action => 'test', :layout => false

[test view]
<% response.headers['Content-Type'] = "text/javascript" %>
alert(<%=1+1 %>);



[view]
   function test() {
     $.ajax({
        url:  '/alert/test',
        type: 'GET',
        dataType:  'script'
      });
   }

[controller]
render :action => 'test', :layout => false

[test view]
<% response.headers['Content-Type'] = "text/javascript" %>
alert(<%=1+1 %>);



[view]
   function test() {
     $.ajax({
        url:  '/alert/test',
        type: 'GET',
        dataType:  'script'
      });
   }

[controller]
  render :update do |page|
    page.alert('cccccc')  #page << "alert('cccc');"   the same     end 



[view]
   function test() {
     $.ajax({
        url:  '/alert/test',
        type: 'GET',
        dataType:  'script'
      });
   }

[controller]
  def test
     #nothing
  end
[test view]  test.rjs
  page << "alert('cccccc');"