禁用SortableJS的选择和编程选择元素

.unselectable {
  -webkit-user-select: none; /* Safari */
  -moz-user-select: none; /* Firefox */
  -ms-user-select: none; /* IE10+/Edge */
  user-select: none; /* Standard syntax */
}

<div class="unselectable">This element cannot be selected.</div>

document.querySelectorAll('.unselectable').forEach(function(el) {
  el.setAttribute('unselectable', 'on');
  el.style.userSelect = 'none';
  el.style.webkitUserSelect = 'none';
  el.style.MozUserSelect = 'none';
  el.style.MsUserSelect = 'none';
});

new Sortable(el, {
  animation: 150,
  ghostClass: 'blue-background-class',
  onEnd: function (evt) {
    // 拖放结束后的操作
  }
});