code: function(url) {
  		var dfd = $.Deferred(),
  			ifm;
  		try {
  			ifm = $('<iframe width="1" height="1" scrolling="no" frameborder="no" style="position:absolute; top:-1px; left:-1px" crossorigin="use-credentials">')
  				.attr('src', url)
  				.one('load', function() {
  					var ifm = $(this);
  					try {
  						this.contentDocument.location.reload(true);
  						ifm.one('load', function() {
  							ifm.remove();
  							dfd.resolve();
  						});
  					} catch(e) {
  						ifm.attr('src', '').attr('src', url).one('load', function() {
  							ifm.remove();
  							dfd.resolve();
  						});
  					}
  				})
  				.appendTo('body');
  		} catch(e) {
  			ifm && ifm.remove();
  			dfd.reject();
  		}
  		return dfd;
  	}
docs: Reload contents of target URL for clear browser cache
  
  @param  String  url target URL
  @return Object  jQuery.Deferred