Bagaimana untuk Mengekalkan Kedudukan Kursor dalam Kandungan Boleh Diedit ``?

var savedRange; // Variable to store the saved selection
var isInFocus; // Flag to track focus state

function saveSelection() {
  if (window.getSelection) {
    // Browser-specific logic to save the selected range
    savedRange = window.getSelection().getRangeAt(0);
  }
}

function restoreSelection() {
  isInFocus = true;
  document.getElementById("area").focus();

  if (savedRange != null) {
    // Browser-specific logic to restore the saved range
    if (window.getSelection) {
      var s = window.getSelection();
      s.removeAllRanges();
      s.addRange(savedRange);
    }
  }
}

// Optional code for selection restoration on click
function cancelEvent(e) {
  if (isInFocus == false && savedRange != null) {
    e.stopPropagation();
    e.preventDefault();
    restoreSelection();
  }
}

// Event handlers for saving and restoring selection
$(document).ready(function() {
  $("#area").focus(function() {
    isInFocus = true;
  });

  $("#area").blur(function() {
    isInFocus = false;
    saveSelection();
  });

  $("#area").mouseup(function() {
    saveSelection();
  });

  $("#area").keyup(function() {
    saveSelection();
  });

  $("#area").focusin(function() {
    restoreSelection();
  });

  // Optional event handlers for restoring selection on click
  $("#area").mousedown(function(e) {
    return cancelEvent(e);
  });

  $("#area").click(function(e) {
    return cancelEvent(e);
  });
});