Yii2 引入 css js

<?php $this->registerJsFile("@web/lib/My97DatePicker/4.8/WdatePicker.js",['depends'=>['backend\assets\AppAsset']])?>
<?php $this->registerJsFile("@web/lib/laypage/1.2/laypage.js",['depends'=>['backend\assets\AppAsset']])?>

<?php $this->beginBlock('js') ?>
js代码
<?php $this->endBlock() ?>
<?php $this->registerJs($this->blocks['js'], \yii\web\View::POS_END); ?>