selectOption(el) {
      let text = el.text().trim();
      this.el.value = text;
      this.$el.trigger('change');
      this._resetAutocomplete();
      this.close();

      // Handle onAutocomplete callback.
      if (typeof this.options.onAutocomplete === 'function') {
        this.options.onAutocomplete.call(this, text);
      }
    }
Select autocomplete option
@param {Element} el  Autocomplete option list item element