캐럿 위치에서 Contenteditable DIV에 HTML을 삽입하는 방법은 무엇입니까?

function pasteHtmlAtCaret(html) {
  var sel, range;
  if (window.getSelection) {
    // IE9 and non-IE
    sel = window.getSelection();
    if (sel.getRangeAt && sel.rangeCount) {
      range = sel.getRangeAt(0);
      range.deleteContents();

      // Create a document fragment from the HTML string
      var el = document.createElement("div");
      el.innerHTML = html;
      var frag = document.createDocumentFragment();
      while ((node = el.firstChild)) {
        frag.appendChild(node);
      }

      range.insertNode(frag);

      // Preserve the selection after the inserted content
      if (frag.lastChild) {
        range = range.cloneRange();
        range.setStartAfter(frag.lastChild);
        range.collapse(true);
        sel.removeAllRanges();
        sel.addRange(range);
      }
    }
  } else if (document.selection && document.selection.type != "Control") {
    // IE < 9
    document.selection.createRange().pasteHTML(html);
  }
}

function pasteHtmlAtCaret(html, selectPastedContent) {
  // Similar functionality as the original function
  // ...
}