Rails: Page specific javascript running on every page if visited in same window

I wanted to run javascript for some particular page. To accomplish this I have created meta tag in layout file like this:

<%= tag :meta, name: :psj, action: action_name, controller: controller_name %>

I have also created a init.js file that will be loaded by application manifest file.

# init.js
var Page, bind = function(fn, me){ return function(){ return fn.apply(me, arguments); }; };
Page = (function() {
  function Page() {
    this.action = bind(this.action, this);
    this.controller = bind(this.controller, this);
  }
  Page.prototype.controller = function() {
    return $('meta[name=psj]').attr('controller');
  };
  Page.prototype.action = function() {
    return $('meta[name=psj]').attr('action');
  };
  return Page;
})();
this.page = new Page;

Here is my javascript file for specific controller that need to run on specific action:

# scans.js
$(document).on('turbolinks:load', function() {
  if (!(page.controller() === 'scans' && page.action() === 'index')) { return; }

  var ajax_call = function() {
    $.get("/scans.js", { }, function(table) {
      $("#scans").replaceWith(table);
    });
  }

  var interval = 1000 * 60 * 1 ;
  setInterval(ajax_call, interval);
});

This works perfect for the scans#index page. Now after visiting this page if I click on any link that loads some other page in same window, ajax_call code runs which should not be the case.

On the contrary if I open that other page in different window it works fine (ajax_call don't run). Is it somehow related to browser's cache or turbolinks cache, not sure what is the cause of the problem.

from Rails: Page specific javascript running on every page if visited in same window