Backbone.js template loader with caching

backbone-load-template.js

var loadTemplate = function (templateFilePath, templateData) {
  //console.info('Loading: ' + templateFilePath + ' with data:', templateData);

  if (!APP.cache.templates[templateFilePath]) {
    var templateDir     = 'js/app/template/';
    var templateUrl     =  templateDir + templateFilePath + '.js';
    var templateString  = '';

    $.ajax({
      async   : false,
      dataType: 'text',
      url     : templateUrl,
      success : function (response) {
        templateString = response;
      },
      error   : function (response) {
        console.info('Error: ', response);
      }
    });

    APP.cache.templates[templateFilePath] = _.template(templateString);
  }

  return APP.cache.templates[templateFilePath](templateData);
};