Custom checkbox show or hide custom notice in Woocommerce checkout - php

Question

Im new in this coding stuff, I researched many sites now and try to build my own checkout field in Woocommerce. It should be a checkout field, when it is checked, some information or warning should plop up, it worked with showing on checkout page normal, but my script doesn't work.
add_filter( 'woocommerce_checkout_fields', 'add_custom_checkout_fields' );
function add_custom_checkout_fields( $fields ) {
$fields['billing']['checkbox_trigger'] = array(
'type' => 'checkbox',
'label' => __('You dont live in Germany?', 'woocommerce'),
'class' => array('form-row-wide'),
'clear' => true
);
return $fields;
}
add_action( 'woocommerce_after_checkout_billing_form', 'echo_notice_billing' );
function echo_notice_billing() {
echo '<div class="billing-notice woocommerce-info" style="display:none">It may take forever</div>';
}
add_action( 'woocommerce_after_checkout_form', 'show_notice_billing' );
function show_notice_billing(){
?>
<script>
jQuery(document).ready(function($){
$('checkbox_trigger').change(function(){
if(this.checked){
$('billing-notice').show();
}
else {
$('billing-notice').hide();
}
});
});
</script>
<?php
}

Answer 1

There are some errors in your jQuery script… Try to replace your related function by this instead:
add_action( 'woocommerce_after_checkout_form', 'show_notice_billing' );
function show_notice_billing(){
?>
<script>
jQuery(function($){
$('#checkbox_trigger').click(function(){
if($(this).is(':checked') ){
$('.billing-notice').show();
}
else {
$('.billing-notice').hide();
}
});
});
</script>
<?php
}
Tested and works.