code: function() {
        if (!this.el) {
          var attrs = this.attributes || {};
          if (this.id) attrs.id = this.id;
          if (this.className) attrs['class'] = this.className;
          this.el = this.make(this.tagName, attrs);
        } else if (_.isString(this.el)) {
          this.el = $(this.el).get(0);
        }
      }
docs: Ensure that the View has a DOM element to render into. If `this.el` is a string, pass it through `$()`, take the first matching element, and re-assign it to `el`. Otherwise, create an element from the `id`, `className` and `tagName` proeprties.