本文实例讲述了yii2使用ajax返回json的实现方法。分享给大家供大家参考,具体如下:
public function actionAjax()
{
 if(isset(Yii::$app->request->post('test'))){
 $test = "Ajax Worked!";
 // do your query stuff here
 }else{
 $test = "Ajax failed";
 // do your query stuff here
 }
 // return Json
 return \yii\helpers\Json::encode($test);
}