jQuery i18n getText plugin

javascript gt

// requires jQuery for $.makeArray and $.extend
(function ($) {
  var data = {}, cacheMisses = false, loadedUrls = [];
  $.gt = function (string) {
    if (data.hasOwnProperty(string)) {
      string = data[string];
    } else if (false !== cacheMisses) {
      if (!cacheMisses.hasOwnProperty(string)) {
        cacheMisses[string] = 0;
      }
      cacheMisses[string] += 1;
    }
    if (1 < arguments.length) {
      var args = $.makeArray(arguments), key;
      if (2 === args.length && args[1] instanceof Object) {
        args = args[1];
      } else {
        args.splice(0, 1);
      }
      for (key in args) {
        if (args.hasOwnProperty(key)) {
          string = string.replace(new RegExp("\\{" + key + "\\}", "g"), args[key]);
        }
      }
    }
    return string;
  };
  $.gt.load = function (translations, callback) {
    if (translations instanceof Object) {
      $.extend(data, translations);
      if (callback) {
        callback();
      }
    } else if ("string" == typeof translations) {
      if ($.inArray(translations, loadedUrls)) {
        if (callback) {
          callback();
        }
      } else {
        $.getJSON(translations, function(response) {
          $.extend(data, response);
          if (callback) {
            callback();
          }
        });
      }
    }
  };
  $.gt.logCacheMisses = function() {
    cacheMisses = {};
  };
  $.gt.cacheMisses = function () {
    return cacheMisses;
  };
  $.fn.gt = function() {
    $.each(this, function() {
      $(this).html($.gt($(this).html()));
    });
  };
}(jQuery));

// Simple Tests:
$.gt.load({
  "simple test": "fail",
  "test template": "hello {name}",
  "another test" : "{0} + {1} = {2}"
});
$.gt.load({
  "simple test": "pass"
}, function() {
  if (console) {
    console.group("testing $.gt");
    if ("pass" !== $.gt("simple test")) {
      console.debug("simple test failed");
    }
    if ("hello world" !== $.gt("test template", {name: "world"})) {
      console.debug("template test #1 failed");
    }
    if ("3 + 2 = 5" !== $.gt("another test", 3, 2, 5)) {
      console.debug("template test #2 failed");
    }
    $.gt.logCacheMisses();
    if ("cache miss" !== $.gt("cache miss")) {
      console.debug("cache miss test failed");
    }
    if (1 !== $.gt.cacheMisses()["cache miss"]) {
      console.debug("cache miss logging test failed");
    }
    // no portable test for the url load code paths
    console.groupEnd("testing $.gt");
  }
})
//$.gt.load("/locale/en-US");