jquery - yii2 kartik switch input type radio button get value in javascript -


i use yii2 kartik switch input type radio , want value of selected option in javascript (specially in jsexpression), here code : 

        $model->orientation = 'portrait';         echo $form->field($model, 'orientation')->widget(switchinput::classname(), [             'name' => 'information_orientation',             'type' => switchinput::radio,             'value' => 'portrait',             'items' => [                 ['label' => 'portrait&nbsp&nbsp&nbsp', 'value' => 'portrait'],                 ['label' => 'paysage&nbsp&nbsp&nbsp', 'value' => 'paysage'],             ],             'pluginoptions' => [                 'ontext' => 'oui',                 'offtext' => 'non',                 'oncolor' => 'success',                 'offcolor' => 'danger',                 'size' => 'mini'             ],             'labeloptions' => ['style' => 'font-size: 13px'],         ]);

i have tried : 

$([name='information-orientation']).val()

but returned undifined value

switchinput class does not care name property give it
according docs, need wrap name in options array

echo $form->field($model, 'orientation')     ->widget(switchinput::classname(), [         'options' => ['name' => 'information_orientation'],         'type' => switchinput::radio,  ....

from docs:

options: array html attributes widget input tag.

edit:
can use following

// value: $("[name='information_orientation']").val()  // check if switch or on off $("[name='information_orientation']").prop('checked')

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