前端地址:
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8"/>
<title>Websocket</title>
</head>
<body>
<h1>字符串转换大写</h1>
<form>
<p>
字符串: <input id="content" type="text" placeholder="输入要转换的字符串">
</p>
</form>
<label id="result">结果为:</label><br><br>
<button onclick="send()">转换</button>
<script type="text/javascript">
var sock = null;
createWebSocket();
// if(!window.localStorage){
// console.log(333)
// alert("浏览器不支持localstorage!");
// }
// var sock = localStorage.getItem("ws");
// if (!sock) {
// localStorage.setItem("ws",sock);
// }
sock.onmessage = function(e) {
var result = document.getElementById('