AI摘要
本文介绍了Typecho博客系统的美化代码，包括右键菜单美化、主题背景图片设置、在线人数统计、评论框动态图、评论区头像转动效果以及禁止页面Ctrl+S保存功能。通过这些代码的添加和修改，可以提升博客的美观度和用户体验。

内容根据文章生成，用于内容的解释与总结。— 美言AI

右键美化

在 footer.php下，前面添加：

<style type="text/css">
    a {text-decoration: none;}
    div.usercm{background-repeat:no-repeat;background-position:center center;background-size:cover;background-color:#fff;font-size:13px!important;width:130px;-moz-box-shadow:1px 1px 3px rgba
(0,0,0,.3);box-shadow:0px 0px 15px #333;position:absolute;display:none;z-index:10000;opacity:0.9; border-radius: 8px;}
    div.usercm ul{list-style-type:none;list-style-position:outside;margin:0px;padding:0px;display:block}
    div.usercm ul li{margin:0px;padding:0px;line-height:35px;}
    div.usercm ul li a{color:#666;padding:0 15px;display:block}
    div.usercm ul li a:hover{color:#fff;background:rgba(170,222,18,0.88)}
    div.usercm ul li a i{margin-right:10px}
    a.disabled{color:#c8c8c8!important;cursor:not-allowed}
    a.disabled:hover{background-color:rgba(255,11,11,0)!important}
    div.usercm{background:#fff !important;}
    </style>
<div class="usercm" style="left: 199px; top: 5px; display: none;">
    <ul>
        <li><a href="https://www.roaing.com/"><i class="fa fa-home fa-fw"></i><span>首页</span></a></li>
        <li><a href="javascript:void(0);" onclick="getSelect();"><i class="fa fa-copy fa-fw"></i><span>复制</span></a></li>
        <li><a href="javascript:history.go(1);"><i class="fa fa-arrow-right fa-fw"></i><span>前进</span></a></li>
        <li><a href="javascript:history.go(-1);"><i class="fa fa-arrow-left fa-fw"></i><span>后退</span></a></li>
        <li style="border-bottom:1px solid gray"><a href="javascript:window.location.reload();"><i class="fa fa-refresh fa-fw"></i><span>重载网页</span></a></li>
        <li><a href="https://www.xxx.com/links.html"><i class="fa fa-meh-o fa-fw"></i><span>友链</span></a></li>  
           <li><a href="https://www.xxx.com/lam.html"><i class="fa fa-pencil-square-o fa-fw"></i><span>给我留言吧</span></a></li>
    </ul>
</div>
<script type="text/javascript">
    (function(a) {
        a.extend({
            mouseMoveShow: function(b) {
                var d = 0,
                    c = 0,
                    h = 0,
                    k = 0,
                    e = 0,
                    f = 0;
                a(window).mousemove(function(g) {
                    d = a(window).width();
                    c = a(window).height();
                    h = g.clientX;
                    k = g.clientY;
                    e = g.pageX;
                    f = g.pageY;
                    h + a(b).width() >= d && (e = e - a(b).width() - 5);
                    k + a(b).height() >= c && (f = f - a(b).height() - 5);
                    a("html").on({
                        contextmenu: function(c) {
                            3 == c.which && a(b).css({
                                left: e,
                                top: f
                            }).show()
                        },
                        click: function() {
                            a(b).hide()
                        }
                    })
                })
            },
            disabledContextMenu: function() {
                window.oncontextmenu = function() {
                    return !1
                }
            }
        })
    })(jQuery);

    function getSelect() {
        "" == (window.getSelection ? window.getSelection() : document.selection.createRange().text) ? layer.msg("啊噢...你没还没选择文字呢！") : document.execCommand("Copy")
    }
    function baiduSearch() {
        var a = window.getSelection ? window.getSelection() : document.selection.createRange().text;
        "" == a ? layer.msg("啊噢...你没还没选择文字呢！") : window.open("https://www.baidu.com/s?wd=" + a)
    }
    $(function() {
        for (var a = navigator.userAgent, b = "Android;iPhone;SymbianOS;Windows Phone;iPad;iPod".split(";"), d = !0, c = 0; c < b.length; c++) if (0 < a.indexOf(b[c])) {
            d = !1;
            break
        }
        d && ($.mouseMoveShow(".usercm"), $.disabledContextMenu())
    });
</script>

主题白色背景改图片

后台css添加：

/*背景*/
body::before {
    z-index: -1;
    content: "";
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    opacity: 0.1;
    position: fixed;
    background: center/cover no-repeat;
    background-image: url(https://xxx.jpg); 
}

在线人数统计

functions.php` 文件里，添加：

//在线人数
function online_users() {
    $filename='online.txt'; //数据文件
    $cookiename='Nanlon_OnLineCount'; //Cookie名称
    $onlinetime=30; //在线有效时间
    $online=file($filename); 
    $nowtime=$_SERVER['REQUEST_TIME']; 
    $nowonline=array(); 
    foreach($online as $line){ 
        $row=explode('|',$line); 
        $sesstime=trim($row[1]); 
        if(($nowtime - $sesstime)<=$onlinetime){
            $nowonline[$row[0]]=$sesstime;
        } 
    } 
    if(isset($_COOKIE[$cookiename])){
        $uid=$_COOKIE[$cookiename]; 
    }else{
        $vid=0;
        do{
            $vid++; 
            $uid='U'.$vid; 
        }while(array_key_exists($uid,$nowonline)); 
        setcookie($cookiename,$uid); 
    } 
    $nowonline[$uid]=$nowtime;
    $total_online=count($nowonline); 
    if($fp=@fopen($filename,'w')){ 
        if(flock($fp,LOCK_EX)){ 
            rewind($fp); 
            foreach($nowonline as $fuid=>$ftime){ 
                $fline=$fuid.'|'.$ftime."\n"; 
                @fputs($fp,$fline); 
            } 
            flock($fp,LOCK_UN); 
            fclose($fp); 
        } 
    } 
    echo "$total_online"; 
}

在要引入的地方，添加：

<?php echo online_users() ?>

评论框动态图

后台css里添加：

#comment-textarea {
background-image:url(https://xxx.gif);
background-size:contain;
background-repeat:no-repeat;
background-position:right bottom;
transition:all 0.25s ease-in-out 0s;
}
textarea#comment-textarea:focus{
background-position-y:120px;
transition:all 0.25s ease-in-out 0s;
}

评论区头像转动

后台css添加：

/**头像旋转呼吸光环**/
.friends-img.mr-2.lazy.loaded:hover{
transform:rotate(360deg);
}
.comment-avatar:hover{
transform:rotate(360deg);
}
.sidebar-comment-avatar.mr-1:hover{
transform:rotate(360deg);
}
.friends-img.mr-2.lazy.loaded,.comment-avatar,.sidebar-comment-avatar.mr-1 {
    border-radius: 50%;
    animation: light 4s ease-in-out infinite;
    transition: all 0.5s;
}
@keyframes light {
    0% {
        box-shadow: 0 0 4px #ff1354;
    }
    25% {
    box-shadow: 0 0 16px #1ebbff;
    }
    50% {
    box-shadow: 0 0 4px #0ed39f;
    }
    75% {
    box-shadow: 0 0 16px #4fe7f4;
    }
    100% {
    box-shadow: 0 0 4px #f35444;
    }
}

禁止页面ctrl+s保存

在 head 或者 footer 里添加：

<script>
    // ctrl+s保存
    document.onkeydown = function () {
        if ((e.ctrlKey) && (e.keyCode == 83)) { //ctrl+s
            return false;
        }
    }
    window.addEventListener("keydown", function (e) {
        //可以判断是不是mac，如果是mac,ctrl变为花键
        //event.preventDefault() 方法阻止元素发生默认的行为。
        if ((e.key == 's' || e.key == 'S') && (navigator.platform.match("Mac") ? e.metaKey : e.ctrlKey)) {
            e.preventDefault();
        }
    }, false);
</script>

未完待续...