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mounted(){
 console.log(this)----------------------------------------------------------this指向vue
 this.initWebpack();
},
methods: {
  initWebpack() {
    let websocket = '';
    if ('WebSocket' in window) {
      websocket = new WebSocket("ws://192.168.1.99:8080/tv/websocket");
    } else {
      alert('當前瀏覽器 Not support websocket')
    } //連接成功建立的回調(diào)方法 websocket.onopen = function () { console.log("WebSocket連接成功")
    console.log(this)----------------------------------------------------------this指向websocket
  };
//接收到消息的回調(diào)方法
websocket.onmessage = function (event) {
console.log(this)
console.log(event);
 this.productinfos=JSON.parse(event.data);//websocket請求過來的是string 需要格式
 if(demo.offsetHeight

methods:{
 initWebpack(){//初始化websocket
  const wsuri = "ws地址";
  this.websock = new WebSocket(wsuri);//這里面的this都指向vue
  this.websock.onopen = this.websocketopen;
  this.websock.onmessage = this.websocketonmessage;
  this.websock.onclose = this.websocketclose;
  this.websock.onerror = this.websocketerror;
 },
 websocketopen(){//打開
  console.log("WebSocket連接成功")
 },
 websocketonmessage(e){ //數(shù)據(jù)接收
  console.log(e)
  this.productinfos = JSON.parse(e.data);
 },
 websocketclose(){ //關(guān)閉
  console.log("WebSocket關(guān)閉");
 },
 websocketerror(){ //失敗
  console.log("WebSocket連接失敗");
 },
}