添加 “返回顶部” 图标

您可以按照以下说明添加 “返回顶部” 图标，以便用户可以单击该图标跳至页面顶部。

1. 登录您的Website Toolbox账户。
2. 点击 整合 页面顶部的链接。
3. 点击 HTML 链接。
4. 将以下代码粘贴到 论坛页脚 HTML 代码 文本框：

   <style>
   #jumpToTopBtn {
        display: none;
        position: fixed;
        bottom: 40px;
        right: 10px;
        z-index: 8;
        border: none;
        outline: none;
        background-color: #999;
        color: white;
        cursor: pointer;
        border-radius: 4px;
        font-size: 0;
        padding: 0;
        background: #aaa;
        width: 40px;
        height: 40px;
        border-radius: 100%;
        opacity: 0.5;
   }
   #jumpToTopBtn:before {
        content: '';
        width: 15px;
        height: 15px;
        display: block;
        transform: rotate(-45deg);
        border-top: 3px solid #fff;
        border-right: 3px solid #fff;
        margin-top: 5px;
        margin-left: 12px;
   }
   #jumpToTopBtn:hover {
        background: #aaa;
        opacity:1;
   }
   </style>
   <script defer>
   function scrollFunction(scrollPosition) {
        var bodyScrollToTop = document.body.scrollTop;
        var documentScrollToTop = document.documentElement.scrollTop;
        if(typeof scrollPosition != "undefined" && scrollPosition != "") {
            bodyScrollToTop = parseInt(scrollPosition) +
   parseInt(bodyScrollToTop);
            documentScrollToTop = parseInt(scrollPosition) +
   parseInt(documentScrollToTop);
        }
        if (bodyScrollToTop > 150 || documentScrollToTop > 150) {
            document.getElementById("jumpToTopBtn").style.display = "block";
        } else {
            document.getElementById("jumpToTopBtn").style.display = "none";
        }
   }
   window.addEventListener("DOMContentLoaded", function(){
        if(wtbx.embed.isForumEmbedded()) {
            if (window.addEventListener) {
                window.addEventListener('message',(evt) => {
                    var scrollPosition =
   parseInt(evt.data.wtbIframeHeightFromTop) +
   parseInt(wtbx.embed.scrollPosition);
                    scrollFunction(scrollPosition);
                }, false);
            }
            document.getElementById("jumpToTopBtn").style.display = "block";
        } else {
            window.onscroll = function() {scrollFunction()};
        }
   
        jQ('#jumpToTopBtn').click(function() {
            if(wtbx.embed.isForumEmbedded()) {
                parent.postMessage({
                    'action':'scrollToTop',
                    'redirectUrl':window.location.href
                },'*');
                return false;
            } else {
                document.body.scrollTop = 0;
                document.documentElement.scrollTop = 0;
            }
        });
   });
   </script>
   <button id="jumpToTopBtn" title="Go to top">Top</button>
   		

5. 保存 你的改变。

If you still need help, please contact us.