看上去分析的挺有道理的，但是感觉不至于的吧，本地有那么慢吗？

YII本来就是基于组件且按需加载的，所以你说得第二个其实不存在。至于第一个，没剥离出来是挺庞大，但那也仅仅是限于代码多而已。YII的核心部分耦合有点高，很难剥离。

当一回搬运工~

Installation 

If you do not have Composer, you may install it by following the instructions at getcomposer.org.

You can then install this package using the following command:

php composer.phar require "janisto/yii2-timepicker" "*"
or add

"janisto/yii2-timepicker": "*"
to the require section of your application's composer.json file.

Usage 

See jQuery Timepicker options.

For example to use the timepicker with a yii\base\Model:

echo TimePicker::widget([
     //'language' => 'fi',
    'model' => $model,
    'attribute' => 'created_at',
    'mode' => 'datetime',
    'clientOptions'=>[
        'dateFormat' => 'yy-mm-dd',
        'timeFormat' => 'HHss',
        'showSecond' => true,
    ]
]);
The following example will use the name property instead:

echo TimePicker::widget([
     //'language' => 'fi',
    'name'  => 'from_time',
    'value'  => $value,
    'mode' => 'time',
]);
You can also use this widget in an yii\widgets\ActiveForm using the yii\widgets\ActiveField::widget() method, for example like this:

echo $form->field($model, 'field')->widget(\janisto\timepicker\TimePicker::className(), [
    //'language' => 'fi',
    'mode' => 'datetime',
    'clientOptions'=>[
        'dateFormat' => 'yy-mm-dd',
        'timeFormat' => 'HHss',
        'showSecond' => true,
    ]
]);

恭喜二位，哈哈哈~