Yii2 Using If else in Views _Form - php

Question

I Have 2 textinputs called Address and Mail_address
I use Jquery so when I input some texts in Address, Mail_address has exactly same texts with Address.
Now I want to add 1 checkbox so when I click that checkbox,
Mail_address has become disabled or readonly and also it has same value as Address
But How do I implement if else for the checkbox in Jquery or in _form ?
Thank You
Here's my views _Form
<?php
use yii\helpers\Html;
use yii\widgets\ActiveForm;
use yii\bootstrap\Modal;
use yii\helpers\BaseHtml;
use app\assets\myassets\InputAsset;
?>
<?php
$button = Html::button('Cancel', ['class' => 'btn btn-default btn-md', 'data' => ['dismiss' => "modal"]]);
$button .= Html::button('Submit', ['id' => 'submit', 'class' => 'btn btn-success success btn-md']);
Modal::begin([
'header' => '<h2>Konfirmasi</h2>',
'toggleButton' => false,
'id' => 'confirm-submit',
'footer' => $button
]);
echo 'Save ?';
Modal::end();
?>
<?php
$this->registerJs('
$(document).ready(function () {
$(document).on("change" ,"#'. Html::getInputId($model ,'Address') .'" ,function(){
$("#'. Html::getInputId($model ,'Mail_Address') .'").val();
var first = $("#'. Html::getInputId($model ,'Address') .'").val();
var third = first;
$("#'. Html::getInputId($model ,'Mail_Address') .'").val(third);
});
});
');
?>
<div class="tcust-form">
<?php $form = ActiveForm::begin([
'id' => 'marketing',
]);
?>
<div class="row">
<div class="col-md-6">
<?= $form->field($model, 'Address')->textInput() ?>
<?= $form->field($model, 'Mail_Address')->textInput() ?>
<?= $form->field($model, 'SameasAbove')->checkbox() ?>
</div>
</div>
<div class="form-group">
<?= Html::submitButton($model->isNewRecord ? Yii::t('app', 'Create') : Yii::t('app', 'Update'), ['class' => $model->isNewRecord ? 'btn btn-success' : 'btn btn-primary']) ?>
</div>
<?php ActiveForm::end(); ?>
</div>

Answer 1

all you need to do is to write a change function for checkbox like
$('#checkboxID').on('change',function(){
if($('#checkboxID).prop('checked'))
{
var address = $('#addressID').val();
$('#mailAddress').val(address).addClass('disabled');
}
else
{
if($('#checkboxID).hasClass('disabled')
{
$('#mailAddress).removeClass('disabled');
}
}
})