src/MultiSelect.php
protected function registerPlugin()
    {
        $view = $this->getView();

        MultiSelectAsset::register($view);

        $id = $this->options['id'];

        $options = $this->clientOptions !== false && !empty($this->clientOptions)
            ? Json::encode($this->clientOptions)
            : '';

        $js = "jQuery('#$id').multiselect($options);";
        $view->registerJs($js);
    }
protected function registerPlugin()
    {
        $view = $this->getView();

        MultiSelectAsset::register($view);

        $id = $this->options['id'];

        $options = $this->clientOptions !== false && !empty($this->clientOptions)
            ? Json::encode($this->clientOptions)
            : '';

        $js = "jQuery('#$id').multiselect($options);";
        $view->registerJs($js);
    }
Registers MultiSelect Bootstrap plugin and the related events
@throws InvalidParamException