js cookies

js-cookies.js

jQuery(document).ready(function($) 
{
    var deviceAgent = navigator.userAgent.toLowerCase();
    var agentID = deviceAgent.match(/(iphone|ipod|ipad)/);
    if (agentID) 
    {
      if( $.cookie('my_cookie_name') == undefined )
      {
        $.cookie( 'my_cookie_name', 'true', { expires: 30 });
        if ( confirm( "You're on an mobile device, you should download our app." ) ) {
          window.location = 'https://itunes.apple.com/....';
        }
      }
    }
});