gistfile1.txt

# from controller

respond_to do |format|
  format.html { redirect_to :back }
  format.json { render json: @voteable.score } # score is an integer
end

# from application.js

$(document).ready(function() {
  $(".posts li").each(function(){
    $("a.icon-chevron-up").click(function(event){
      event.preventDefault();
      $.ajax({
        dataType: "json",
        type: "POST",
        url: $(this).attr("href"),
        success: function(data) {
          console.log(data);
        }
      });
    });
  });
});