jQuery.Handlebars.plugin.js

(function ($) {
  var compiled = {};
  $.fn.handlebars = function (template, data) {
    if (template instanceof jQuery) {
      template = $("<div />").append($(template).clone()).html();
    }
    compiled[template] = Handlebars.compile(template);
    this.html(compiled[template](data));
  };
})(jQuery);