Setter/getter for some particular global var and increment on each Ajax request for Capybara tests

ajax_requests.rb

  def set_ajax_counter(global_var)
    page.execute_script <<-SCRIPT
      window["#{global_var}"] = 0;
      $(document).on("ajaxSend", function(){
        window["#{global_var}"]++;
        console.log('increment ajax counter window["#{global_var}"] = ' + window["#{global_var}"]);
      });
    SCRIPT
  end

  def get_js_global_var(global_var)
    page.evaluate_script <<-SCRIPT
      window["#{global_var}"]
    SCRIPT
  end