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ryder_-js_-learning
/
ws.html

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>

<body>
    <div>测试1</div>
    <input id="input"/>
    <button id="btn">发送</button>
    <div id="mess"></div>
</body>
<script>
    const mess = document.getElementById("mess")
    if(window.WebSocket){
        const ws = new WebSocket('ws://localhost:3000','1');
        ws.onopen = (e) =>{
            console.log("__success_")
        }
        ws.onclose = (e) =>{
            console.log("关闭");
            mess.innerHTML = "服务器关闭"
        }
        ws.onerror = (e)=>{
            console.log("ws连接错误",e);
        }
        ws.onmessage = (e) =>{
            let para = document.createElement("p");
            let node = document.createTextNode(e.data);
            para.appendChild(node);
            mess.appendChild(para);
        }
        document.getElementById("btn").addEventListener("click",(e)=>{
        e.preventDefault();
        let txt = document.getElementById("input").value;
        if(txt != ""){
            let sendObj = {
                msg:txt,
                to:1,            }
            ws.send( JSON.stringify(sendObj))
        }
        document.getElementById("input").value = ""
    })
    }

</script>
</html>