html websocket的基本使用
<!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" />
<style>
div {
width: 200px;
height: 200px;
border: 1px solid #30897c;
}
</style>
<title>聊天室</title>
</head>
<body>
<input type="text" placeholder="输入你的内容" name="" id="" />
<button>发送请求</button>
<div></div>
</body>
</html>
<script>
var input = document.querySelector("input");
var button = document.querySelector("button");
var div = document.querySelector("div");
var socket = new WebSocket("ws://localhost:3000");
socket.addEventListener("open", function () {
div.innerHTML = "连接服务成功了！";
});
button.addEventListener("click", () => {
var value = input.value;
socket.send(value);
});
socket.addEventListener("message", (e) => {
console.log(e.data);
div.innerHTML = e.data;
});
socket.addEventListener("close", () => {
console.log("服务器断开。。。");
});
</script>
