fastapp
/
ws_chat.html

<!DOCTYPE html>
<html>
    <head>
        <title>Chat</title>
        <meta charset="UTF-8" />
    </head>
    <body>
        <h1>聊天室[你叫<span id="user"></span></h1>
        <input type="text" name="message" autocomplete="off"/><button>发送</button>
        <!-- 通话列表 -->
        <ul id='history'></ul>
        <script>
        const message_inp = document.querySelector('input[name=message]')
        const send_btn = document.querySelector('button');
        const history = document.querySelector('#history');
        const user = document.querySelector('#user');
        const username = location.search.substring(1);
        user.innerHTML = decodeURI(username);
        // 原生websocket
        ws = new WebSocket(`ws://127.0.0.1:8123/chat`)

        // 客户端主动发送数据
        send_btn.onclick = ()=>{
            // 使用websocket发送数据
            let message = message_inp.value;
            ws.send(JSON.stringify({
                username,
                message
            }))

            history.innerHTML += `<li style="text-align: left">${username}: ${message}</li>`
        }

        // 客户端监听服务端主动发送的数据
        ws.onmessage = (message)=>{
            console.log("接受到服务端推送的数据：", message.data)
            history.innerHTML += `<li style="text-align: right">${message.data} :ChatGPT</li>`
        }
        </script>
    </body>
</html>