Show Splitit instalments on Shopify checkout

splitit-checkout.js

// Splitit sidebar
if(location.href.indexOf('/checkouts/') >= 0) {
  // JQuery injection
  var ccJqueryScript = document.createElement('script');
  ccJqueryScript.setAttribute('type', 'text/javascript');
  ccJqueryScript.setAttribute('src', '//ajax.googleapis.com/ajax/libs/jquery/1.11.0/jquery.min.js');
  document.getElementsByTagName('head')[0].appendChild(ccJqueryScript);

  // Checkout js injection
  var ccScript = document.createElement('script');
  ccScript.setAttribute('type', 'text/javascript');
  ccScript.setAttribute('src', '//cdn.shopify.com/s/files/1/0027/5536/2879/files/splitit-checkout.js?56957');
  document.getElementsByTagName('head')[0].appendChild(ccScript);

  // Splitit styles injection
  const splititStyles = document.createElement('link');
  splititStyles.setAttribute('rel', 'stylesheet');
  splititStyles.setAttribute('src', '//cdn.shopify.com/s/files/1/0027/5536/2879/files/splitit-styles.css?56959');
  document.getElementsByTagName('head')[0].appendChild(splititStyles);
}

// Splitit learn more
var learn_more_data = '<div class="learn-more-wrapper"><div class="learn-more-inner"><a href="javascript:void(0);" class="close_learn_more"><img src="https://cdn.shopify.com/s/files/1/0985/6204/files/cancel.svg?4079804129806697275" class="img-responsive" /></a><img src="https://cdn.shopify.com/s/files/1/0027/5536/2879/files/splitit-learn_more-en_us.png?56958" class="img-responsive" /></div></div>';
$('.edit_checkout').append(learn_more_data);
var learn_more = 'Learn More';
if ($('[data-select-gateway="30122437"]').length > 0) {
  $('label[for="checkout_payment_gateway_30122437"]').append('<a href="javascript:void(0)" class="learn-more">' + learn_more + '</a>');
  $('label[for="checkout_payment_gateway_30122437"] .offsite-payment-gateway-logo').attr('src', 'https://cdn.shopify.com/s/files/1/1477/0490/files/logo.svg?18104013711271438358');
}

$('.learn-more').on('click', function() { 
  $('.learn-more-wrapper').toggleClass('active');
});

$('.close_learn_more').on('click', function() { 
  $('.learn-more-wrapper').toggleClass('active');
});