(1):搭建nodejs服务器以后,cnpm install nodejs-websocket 进行安装这个模块,会生成一个node_modules文件夹 (2)创建websocket服务器app.js:
const ws = require('nodejs-websocket')
var server = ws.createServer((conn)=>{
console.log('有用户连接上来了')
conn.on('text',(data)=>{
console.log('接收到用户信息:',data)
});
})
ws.addEventListener('message',(e)=>{
console.log(e.data)
});
server.listen(3000,()=>{
console.log('websocket server starting')
})
(3)创建客户端index.html文件
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title></title>
<style type="text/css">
div{
width: 200px;
height: 200px;
border: 1px solid black;
}
</style>
</head>
<body>
<input type="text" placeholder="输入信息..."/>
<button>发送</button>
<div></div>
<script>
var divHtml = document.querySelector('div');
var buttonHtml = document.querySelector('button');
var inputHtml = document.querySelector('input');
var ws = new WebSocket("ws://localhost:3000");
ws.addEventListener('open',function(){
divHtml.innerHTML = '已经连接成功';
})
buttonHtml.addEventListener('click',()=>{
var value = inputHtml.value;
ws.send(value);
});
</script>
</body>
</html>
测试:
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