实现chatGPT 聊天样式

news2024/9/23 21:20:14

效果图在这里插入图片描述
代码：

<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Chat Example</title>

    <link rel="stylesheet" href="./highlight/default.min.css">

    <script src="./highlight/highlight.min.js"></script>


    <script src="./marked/marked.min.js"></script>

</head>

<body>
    <div class="title">
        <span> 软件部测试，后端大模型使用claude2。计划接入gpt4</span>
    </div>
    <div id="chat-container">
        <div id="chat-messages">
        </div>
    </div>
    <div class="message-input-wrapper">
        <textarea type="text" id="message-input" placeholder="请输入您的内容"></textarea>
        <div id="send-button">发送</div>
    </div>

    <script>
        console.log(window)
        // 获取需要的DOM元素
        const chatMessages = document.getElementById("chat-messages");
        const messageInput = document.getElementById("message-input");
        const sendButton = document.getElementById("send-button");

      
      
        // formateMarkdown("# Hello World")
        // 定义发送消息的函数
        function sendMessage() {
            const message = messageInput.value;
            if (message.trim() === "") {
                return;
            }

            // 创建一个新的消息元素，并添加到聊天框
            let messageElement = `<div class="flex-right">
                <div class="time-remark-wrapper mr10">
                    <span class="time">${getNowTime()}</span>
                    <div class="message user-message" style="display: inline-block;">
                        ${message}
                    </div>
                </div>
                <img src="./images/avatar.jpeg" class="avatar"/>
            </div>`
            chatMessages.innerHTML += messageElement;

            messageInput.value = "";

            // 发送消息到服务器
            sendToServer(message);
        }


        function getNowTime() {
            var currentTime = new Date();
            var year = currentTime.getFullYear();
            var month = currentTime.getMonth() + 1; // 月份从 0 开始，所以要加 1
            var day = currentTime.getDate();
            var hours = currentTime.getHours();
            var minutes = currentTime.getMinutes();
            var seconds = currentTime.getSeconds();

            // 格式化为两位数
            if (month < 10) {
                month = '0' + month;
            }
            if (day < 10) {
                day = '0' + day;
            }
            if (hours < 10) {
                hours = '0' + hours;
            }
            if (minutes < 10) {
                minutes = '0' + minutes;
            }
            if (seconds < 10) {
                seconds = '0' + seconds;
            }

            var formattedTime = year + '-' + month + '-' + day + ' ' + hours + ':' + minutes + ':' + seconds;
            return formattedTime;
        }


        function formateMarkdown(message) {

            var renderer = new marked.Renderer();
            renderer.code = function (code, language) {
                var highlightedCode = hljs.highlightAuto(code).value;
                return '<pre><code class="hljs ' + language + '">' + highlightedCode + '</code></pre>';
            };

            marked.setOptions({
                renderer: renderer,
                gfm: true,
                tables: true,
                breaks: true,
                pedantic: false,
                sanitize: false,
                smartLists: true,
                smartypants: false,
            })

            var parsedHTML = marked.parse(message);
            let messageHTML = ` <div class="flex-left">
                <img src="./images/chatGPT.png" class="avatar mr10"/>
                <div class="time-remark-wrapper">
                    <span class="time">${getNowTime()}</span>
                    <div class="message bot-message" style="display: inline-block;">
                        ${parsedHTML}
                    </div>
                </div>
              
            </div>`
            chatMessages.innerHTML += messageHTML;

        }

        // 定义发送消息到服务器的函数
        function sendToServer(message) {
            // formateMarkdown(
            //     '好的,下面是用javascript实现冒泡排序的代码:\n\n```js\nfunction bubbleSort(arr) {\n  const len = arr.length;\n  for (let i = 0; i &lt; len; i++) {\n    for (let j = 0; j &lt; len - 1 - i; j++) {\n      if (arr[j] &gt; arr[j+1]) {\n        // 相邻元素两两对比\n        [arr[j], arr[j+1]] = [arr[j+1], arr[j]]; // 交换两个元素\n      } \n    }\n  }\n  return arr;\n}\n\n// 测试\nconst arr = [5, 4, 3, 2, 1];\nconsole.log(bubbleSort(arr)); // [1, 2, 3, 4, 5]\n```\n\n主要思路是:\n\n1. 从第一个元素开始,依次与后面的元素进行两两比较\n2. 如果顺序相反,则交换两个元素的位置\n3. 一轮比较下来,可以保证最后一个元素是最大的\n4. 下一轮继续比较到倒数第二个元素,以此类推\n5. 直到数组有序\n\n冒泡排序的时间复杂度为 O(n^2),是一种简单但不是很高效的排序算法。"'
            // )

            // 使用AJAX发送POST请求
            const xhr = new XMLHttpRequest();
            xhr.open("POST", "/chat", true);
            xhr.setRequestHeader("Content-Type", "application/json");
            xhr.onreadystatechange = function () {
                if (xhr.readyState === XMLHttpRequest.DONE && xhr.status === 200) {
                    try {
                        // 解析服务器响应
                        const response = JSON.parse(xhr.responseText);
                        // 提取服务器回复的消息
                        const botMessage = response.msg;
                        // 创建回复消息的元素，并添加到聊天框
                        formateMarkdown(botMessage);

                    } catch (error) {
                        console.error("Error parsing JSON response:", error);
                    }
                }
            };
            xhr.send(JSON.stringify({
                message
            }));
        }

        // 绑定发送按钮的点击事件
        sendButton.addEventListener("click", sendMessage);
    </script>

    <style>
        body {
            font-size: 14px;
        }

        html,
        body {
            width: 100%;
            height: 100%;
            padding: 0;
            margin: 0;
            display: flex;
            flex-direction: column;
            align-items: center;
        }

        .time-remark-wrapper {
            display: flex;
            flex-direction: column;
        }

        .mr10 {
            margin-right: 10px;
        }

        .time {
            color: rgba(180, 187, 196);
            font-size: 12px;
            margin-bottom: 5px;
        }

        .title {
            display: flex;
            justify-content: center;
            text-align: center;
            font-size: 16px;
            padding: 15px;

        }

        #chat-messages {
            padding: 30px;
        }

        #chat-container {
            width: 1000px;
            margin: 0 auto;
            border-width: 1px;
            border-style: solid;
            border-color: #e5e7eb;
            border-radius: 8px;
            height: calc(100% - 150px);
            box-sizing: content-box;
            position: relative;
            overflow: auto;
        }

        .message-input-wrapper {
            position: fixed;
            bottom: 20px;
            display: flex;
            align-items: center;
            max-width: 1280px;
            margin: 0 auto;
            width: 1000px;
            /* background-color: #fff; */
        }

        .flex-right .time-remark-wrapper {
            align-items: flex-end;
        }

        .message {
            padding: 8px;
            border-radius: 8px;

        }

        textarea:focus {
            outline: none;
        }

        #message-input {
            border: 1px solid #e5e7eb;
            border-top-left-radius: 4px;
            border-bottom-left-radius: 4px;
            padding: 10px;
            flex: 1;

        }

        #message-input>textarea {
            flex: 1;
        }

        .user-message {
            background-color: rgb(210, 249, 209);
            text-align: right;
            margin-bottom: 20px;
            padding: 10px 15px;
        }

        .avatar {
            width: 32px;
            height: 32px;
            border-radius: 50%;
        }

        .flex-right {
            display: flex;
            justify-content: end;
        }

        .flex-left {
            display: flex;
            justify-content: start;
        }

        #send-button {
            background: #0c7a43;
            color: #fff;
            padding: 16px 15px;
            border-top-right-radius: 4px;
            border-bottom-right-radius: 4px;
            cursor: pointer;

        }

        .bot-message {
            background-color: rgb(244, 246, 248);
            margin-bottom: 20px;
            padding: 10px 15px;
        }

        .hljs {
            background: #fff;
            border-radius: 8px;
        }
    </style>
</body>

</html>

实现思路：
1、因为GPT请求返回来得数据是markdown数据，主要是用marked解析markdown数据格式

marked.parse(message);

2、然后用highlight实现代码的高亮显示

https://www.jsdelivr.com/
在这里插入图片描述
最开始这里不晓得怎么引入，然后用

<link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/highlight.js/styles/default.min.css">
<script src="https://cdn.jsdelivr.net/npm/highlight.js"></script>

提示没有require

然后下载了文档
在这里插入图片描述
在下载的文档中看README.md 文档

根据此链接，找到了正确的js文件和css样式文件