code constant

String const code

Implementation

static const String code = r'''
function bindBackToTop() {
  document.querySelectorAll('[title="Back to top"], button[style*="position: fixed"][style*="bottom"]').forEach(function(btn) {
    if (btn.dataset.arcaneInteractive) return;
    btn.dataset.arcaneInteractive = 'true';

    btn.addEventListener('click', function() {
      window.scrollTo({ top: 0, behavior: 'smooth' });
    });

    window.addEventListener('scroll', function() {
      if (window.scrollY > 300) {
        btn.style.opacity = '1';
        btn.style.pointerEvents = 'auto';
      } else {
        btn.style.opacity = '0';
        btn.style.pointerEvents = 'none';
      }
    });
  });
}
''';