我在本地主機上的 WordPress 網站上使用 localStorage 進行暗/亮模式切換。一切都按預期工作，但當刷新頁面或訪問不同頁面時，切換位置始終恢復為“亮”。這是我正在使用的代碼：(function() {  let onpageLoad = localStorage.getItem("theme") || "";  let element = document.body;  element.classList.add(onpageLoad);  document.getElementById("theme").textContent =    localStorage.getItem("theme") || "light";})();function themeToggle() {  let element = document.body;  element.classList.toggle("dark-mode");  let theme = localStorage.getItem("theme");  if (theme && theme === "dark-mode") {    localStorage.setItem("theme", "");  } else {    localStorage.setItem("theme", "dark-mode");  }  document.getElementById("theme").textContent = localStorage.getItem("theme");}超文本標記語言<div class="slider-div">   <span class="slider-text">Light Mode</span>   <label class="switch">     <input type="checkbox" onclick="themeToggle()" id="theme">     <span class="slider round"></span>   </label>   <span class="slider-text">Dark Mode</span></div>這是我用于復選框的 CSS：.switch {  position: relative;  display: inline-block;  width: 54px;  height: 22px;}.switch input {  display: none;}.slider {  position: absolute;  cursor: pointer;  top: 0;  left: 0;  right: 0;  bottom: 0;      background-color: #CCC;  -webkit-transition: .6s;  transition: .6s;}.slider:before {  position: absolute;  content: "";  height: 15px;  width: 15px;  left: 7px;  bottom: 4px;  background-color: #FFF;  -webkit-transition: .6s;  transition: .6s;}input:checked+.slider {  background-color: #2196F3;}input:focus+.slider {  box-shadow: 0 0 1px #2196F3;}input:checked+.slider:before {  -webkit-transform: translateX(26px);  -ms-transform: translateX(26px);  transform: translateX(26px);}/* Rounded sliders */.slider.round {  border-radius: 34px;}.slider.round:before {  border-radius: 50%;}