我有很多列表，我需要在刪除一個(gè) li 后更新它們的總數(shù)，代碼運(yùn)行良好但在刪除 li 后它沒有更新，那么如何在刪除一個(gè)后更新 li 的總數(shù)？我花了很長(zhǎng)時(shí)間找到解決方案，但我失敗了！var totalList = document.getElementById('total');var deleteBtn = document.getElementsByClassName('delete');var allList = document.querySelectorAll(".navbar-nav li");var removeNotify = function(e) {    e.preventDefault();  var notifyItem = $(e.delegateTarget).parent();  var html = $('html');  html.css('overflowX', 'hidden');  notifyItem.addClass(notifyItem.data('animation-class'));  notifyItem.bind('oanimationend animationend webkitAnimationEnd', function() {    notifyItem.remove();    html.removeAttr('style');  }); };$(function() {  $('.delete').on('click', removeNotify);  console.log(allList.length - 1);  });// total livar myList = document.getElementById('myList');$('.delete').on('click', 'li', function(ev){   totalList.innerHTML = allList.length - 1});        <div class="notifyNum align-center d-flex justify-content-center align-items-center mr-auto">          <span id="total" class="fontSize12"></span>        </div><ul id="myList" class="navbar-nav w-100 align-left">              <li class="nav-item title">                <h1 class="p-0 m-0 weight700 fontSize20 gray6">Notifications</h1>              </li>              <li id="1" class="nav-item" data-animation-class="minimize">                <h2 class="notifyTitle weight600 fontSize16 gray5 mb-2">test-1 </h2>                <span class="delete text-center">&times;</span>              </li>              <li id="2" class="nav-item" data-animation-class="minimize">                <h2 class="notifyTitle weight600 fontSize16 gray5 mb-2">test-2 </h2>                <span class="delete text-center">&times;</span>              </li>              <li id="3" class="nav-item" data-animation-class="minimize">                <h2 class="notifyTitle weight600 fontSize16 gray5 mb-2">test-3 </h2>                <span class="delete text-center">&times;</span>              </li>            </ul>