websocket_ws = new websocket

var wsServer = require("ws").Server;
var ws = new wsServer({port:3000});
 
 
var clientArr = [];
var i = 0;
ws.on("connection",function(client){
	console.log("aaa");
	clientArr.push(client);
//	client.id = i ++;
	client.on("message",function(data){
		clientArr.map(function(item){
//			console.log(JSON.stringify(data))
			item.send(data);
		})
	})
})

以上是服务器部署代码.

//var wsClient = new WebSocket("ws://127.0.0.1:3000");
//var wsClient = new WebSocket("ws://10.8.158.21:3000");
var wsClient = new WebSocket("ws://echo.websocket.org");
 
wsClient.onmessage = function(evt){
	console.log("aaa");
	var obj = JSON.parse(evt.data);
	console.log(evt.data);
	$("#box").append(`<p>${obj.id}说:${obj.data}</p>`);
}
$("#btn").click(function(){
var obj = {};
	
	console.log(wsClient);
	console.log(wsClient.readyState);
	if(wsClient.readyState==1){
		obj.id = "李杰";
		obj.data = $("#txt").val();
		wsClient.send(JSON.stringify(obj));
	}
 
})