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add_system
/
chat copy.html

<!DOCTYPE html>
<html>
    <head>
        <title>Chat</title>
    </head>
    <body>
        <h1>WebSocket Chat</h1>
        <h2>Your ID: <span id="ws-id"></span></h2>
        <form action="" onsubmit="sendMessage(event)">
            <input type="text" id="bk_num" autocomplete="off"/>
            <button>Send</button>
        </form>
        <!-- 为 ECharts 准备一个定义了宽高的 DOM -->
        <h3 style="text-align: center;">光伏</h3>
        <div id="main" style="width: 1280px;height:600px;"></div>
        <ul id='messages'>
        </ul>
        <script>
            // var bk_num = document.getElementById("bk_num")
            var ws = new WebSocket(`ws://localhost:16888/strong`);
            ws.onmessage = function(event) {
                var messages = document.getElementById('messages')
                var message = document.createElement('li')
                var content = document.createTextNode(event.data)
                message.appendChild(content)
                messages.appendChild(message)
                var json_data = event.data
                console.log(typeof event.data)  //str
                console.log(typeof eval(json_data))  //str
                console.log(event.data)
            };
            function sendMessage(event) {
                var input = document.getElementById("bk_num")
                ws.send(input.value)
                input.value = ''
                event.preventDefault()
            }
        </script>
    </body>
</html>