consulta

gistfile1.js

var first_time = true;
$(document).ready(function () {
    updateContainer();
    $(window).resize(function() {
		updateContainer();
		console.log(first_time);
    });
  });

function updateContainer() {
	var width = $(window).width();
	if (width <= 768 && first_time == true) { 
		$(".tabs #linea-rota").each(function() {
			var html = $(this).html().split(" ");
			html = "<br>" + html[0] + "<br>" + html.slice(1).join(" ");
			$(this).html(html);			
			first_time = false;
		});
	}
	if (width > 769 && first_time == false) { 
		$('.tabs #linea-rota').find('br').remove();
		//first_time=null;
	}
}

var width = $(window).width();
if (width <= 768) {
  $(".tabs #linea-rota").each(function() {
    var $el = $(this);
    if (!$el.find('br').length) {
      var html = $(this).html().split(" ");
      html = "<br>" + html[0] + "<br>" + html.slice(1).join(" ");
      $(this).html(html);
    }
  });
} else {
  $('.tabs #linea-rota').find('br').remove();
}