nodejs-chat/index.html at master · kyle-go/nodejs-chat · GitHub

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<!--
	Nodejs实现匿名聊天群，欢迎开车
	https://github.com/kylescript/nodejs-chat
 -->
<!DOCTYPE html>
<html lang="en">

<head>
    <meta name="viewport"
          content="width=device-width, user-scalable=no, initial-scale=1.0, maximum-scale=1.0, minimum-scale=1.0">
    <meta charset="UTF-8">
    <title>匿名开车群</title>
    <script src="https://cdn.bootcss.com/jquery/3.3.1/jquery.min.js"></script>
    <script src="https://cdn.bootcss.com/js-cookie/latest/js.cookie.min.js"></script>
    <style>
        body {
            font-size: 14px;
        }

        .init {
            text-align: center;
        }

        .current-user {
            text-align: center;
            margin: 10px;
        }

        .change-name {
            color: dodgerblue;
            cursor: pointer;
            font-size: 14px;
        }

        .content {
            display: none;
        }

        .chat {
            margin: 0 8px;
            background-color: #fcfcfc;
            border: dimgray 1px solid;
            border-radius: 5px;
            height: 400px;
            overflow: scroll;
            overflow-x: hidden;
            overflow-y: visible;
        }

        .cell-left {
            margin: 6px 0;
        }

        .cell-right {
            margin: 6px 0;
            text-align: right;
        }

        .cell-left span {
            font-size: 12px;
            color: chocolate;
            font-style: italic;
        }

        .cell-right span {
            color: lime;
            font-size: 12px;
            font-style: italic;
            float: right;
            margin-right: 5px;
        }

        .cell-left p {
            margin: 5px 0 5px 10px;
            padding: 5px;
            display: inline-block;
            color: #101010;
            background-color: #e6e5ed;
            border-radius: 8px;
            max-width: 75%;
            word-break: break-all;
            word-wrap: break-word;
        }

        .cell-right p {
            margin: 5px 10px 5px 0;
            padding: 5px;
            display: inline-block;
            color: #FAFAFA;
            background-color: #1E8EFE;
            border-radius: 8px;
            max-width: 75%;
            text-align: left;
            word-break: break-all;
            word-wrap: break-word;
        }

        .chat-send {
            margin: 10px 8px;
        }

        input {
            display: inline-block;
            border: #ccc 1px solid;
            border-radius: 3px;
            padding: 8px 5px;
            width: 75%;
        }

        button {
            width: 15%;
            padding: 8px 0;
            margin-left: 4px;
            background-color: darkgreen;
            border-radius: 3px;
            border: #ccc 1px solid;
            font-size: 12px;
            color: white;
        }

        /* start 初始化动画 start */
        #loading3 {
            left: 50%;
            margin: 20px 0 0 -25px;
            position: relative;
            width: 50px;
            height: 50px;
        }

        .demo3 {
            width: 4px;
            height: 4px;
            border-radius: 2px;
            background: black;
            position: absolute;
            animation: demo3 linear 0.8s infinite;
            -webkit-animation: demo3 linear 0.8s infinite;
        }

        .demo3:nth-child(1) {
            left: 24px;
            top: 2px;
            animation-delay: 0s;
        }

        .demo3:nth-child(2) {
            left: 40px;
            top: 8px;
            animation-delay: 0.1s;
        }

        .demo3:nth-child(3) {
            left: 47px;
            top: 24px;
            animation-delay: 0.1s;
        }

        .demo3:nth-child(4) {
            left: 40px;
            top: 40px;
            animation-delay: 0.2s;
        }

        .demo3:nth-child(5) {
            left: 24px;
            top: 47px;
            animation-delay: 0.4s;
        }

        .demo3:nth-child(6) {
            left: 8px;
            top: 40px;
            animation-delay: 0.5s;
        }

        .demo3:nth-child(7) {
            left: 2px;
            top: 24px;
            animation-delay: 0.6s;
        }

        .demo3:nth-child(8) {
            left: 8px;
            top: 8px;
            animation-delay: 0.7s;
        }

        @keyframes demo3 {
            0%, 40%, 100% {
                transform: scale(1);
            }
            20% {
                transform: scale(3);
            }
        }

        @-webkit-keyframes demo3 {
            0%, 40%, 100% {
                transform: scale(1);
            }
            20% {
                transform: scale(3);
            }
        }

        /* end 初始化动画 end */
    </style>
</head>

<body>
<div class="init">正在初始化，请稍等...
    <div id="loading3">
        <div class="demo3"></div>
        <div class="demo3"></div>
        <div class="demo3"></div>
        <div class="demo3"></div>
        <div class="demo3"></div>
        <div class="demo3"></div>
        <div class="demo3"></div>
        <div class="demo3"></div>
    </div>
</div>
<div class="content">
    <div class="current-user">当前用户: <a class="user-name">AnyOne</a><a class="change-name"> (换个名字)</a></div>
    <div class="chat">
        <!--<div class="cell-left">-->
        <!--<p><span>黄旭东</span><br>ＭＤ老子是专业解说好吗？这怎么奶死嘛，专业解说看这种局面还看不懂啊？</p>-->
        <!--</div>-->
        <!--<div class="cell-right">-->
        <!--<p><span>鲁迅</span><br>我即使是死了,钉在在棺材里了,也要在墓里,用这腐朽的声带喊出：“我没说过这句话。”</p>-->
        <!--</div>-->
    </div>
    <div class="chat-send">
        <input class="send-content" type="text" placeholder="请输入内容(回车发送)...">
        <button class="send-btn">发送</button>
    </div>
</div>
<script>
    // 我的名字
    let name = "AnyOne";
    let cookie_name = 'cookie_name';

    // 定义消息前缀，表示特定的含义
    const prefix_new_id = '[ID_NEW]';       // 分配名字给新用户
    const prefix_change_id = '[ID_CHANGE]'; // 老用户换名字
    const prefix_use_id = '[ID_USE]';       // 老用户用cookie里的老名字
    const prefix_message_text = '[MESSAGE_TEXT]';   // 文本消息
    const prefix_message_photo = '[MESSAGE_PHOTO]'; // 图片消息
    // 文本消息名字、内容分隔符
    const split_str = "#9527#";

    function create_chat_cell(user_name, message) {
        function html2Escape(sHtml) {
            return sHtml.replace(/[<>&"]/g, (c) => {
                return {'<': '&lt;', '>': '&gt;', '&': '&amp;', '"': '&quot;'}[c];
            });
        }

        // 暂时去掉吧，让大家玩。
        // user_name = html2Escape(user_name);
        // message=html2Escape(message);

        // 自己的消息，放在右侧
        if (name === user_name) {
            return '<div class="cell-right"><p><span>' + user_name + '</span><br>' + message + '</p></div>'
        }
        return '<div class="cell-left"><p><span>' + user_name + '</span><br>' + message + '</p></div>'
    }

    // document ready
    $(() => {
        let ws = new WebSocket('ws://68.168.141.229:9527');
        ws.onopen = () => {
            console.log('client connect server successfully.');

            $('.init').css('display', 'none');
            $('.content').css('display', 'block');

            let old_name = Cookies.get(cookie_name);
            if (old_name === undefined) {
                ws.send(prefix_new_id);
            } else {
                ws.send(prefix_use_id + old_name);
            }
        };

        // 连接断开了
        ws.onerror = () => {
            alert("Σ( ° △ °|||)︴  服务器被二师兄吃掉了!!!");
            location.reload();
        };

        ws.onmessage = message => {
            let m = message.data;
            console.log('Recv:' + m);
            if (m.startsWith(prefix_new_id)) {  // 新名字
                let new_name = m.substring(prefix_new_id.length);
                Cookies.set(cookie_name, new_name, {expires: 3});
                $('.user-name').text(new_name);
                name = new_name;
            } else if (m.startsWith(prefix_message_text)) {
                let text = m.substring(prefix_message_text.length);
                let pos = text.indexOf(split_str);
                let user_name = text.substring(0, pos);
                let message = text.substring(pos + split_str.length);
                console.log(user_name + ":" + message);
                let cell = create_chat_cell(user_name, message);
                $('.chat').append(cell);

                // 延迟0.2秒滚动到底部
                setTimeout(() => {
                    // 这两种写法都可以，但是貌似第二种更专业一点吧
                    // $('.chat')[0].scrollTop = $('.chat')[0].scrollHeight;
                    $('.chat').prop('scrollTop', $('.chat').prop('scrollHeight'));
                }, 100);
            }
        };

        $('.change-name').click(() => {
            ws.send(prefix_change_id);
        });

        $('.send-btn').click(() => {
            let text = $('.send-content').val();
            if (text === '') {
                alert("不能发送空白信息!");
                return;
            }
            ws.send(prefix_message_text + text);
            $('.send-content').val("");
        });
    });

    // 响应回车登录事件
    document.onkeydown = function (e) {
        if (!e) e = window.event;
        if (e.key === 'Enter') {
            e.preventDefault();
            $('.send-btn').click();
        }
    };

</script>
</body>

</html>