✨ div を印刷するための簡単なトリック

@media print {
  body {
    visibility: hidden;
  }
}

@media print {
  #section-to-print {
    top: 0;
    left: 0;
    position: absolute;
    visibility: visible;
  }
}

const button = document.querySelector('print-page');

button.addEventListener('click', () => window.print());

const printContents = document.getElementById(divId).innerHTML;
const originalContents = document.body.innerHTML;

document.body.innerHTML = printContents;

window.print();

document.body.innerHTML = originalContents;