var ws = {  init:function(callback){    var _this = this;    _this.callback = callback;  },  websocket:function(){    var _this = this;    if('WebSocket' in window){      var websocket = new WebSocket('ws://192.168.2.170:7059');      websocket.onopen = function(){        console.log('打开websocket连接');      }      websocket.onmessage = function(event){        console.log('接收服务端发送过来的信息')        console.log(event);        _this.callback && _this.callback(event)      }      websocket.onerror = function(){        console.log('websocket连接发生错误');      }      websocket.onclose = function(){        console.log('连接关闭');      }    }else {      alert('当前浏览器不支持WebSocket')    }  }}