微信小程序使用Socket的實例

const io = require('../utils/io.js')
let url = 'wss://......'
let wsStatus = false
let onSocket = null
export const connect = function(cb){
 if(!onSocket){
 onSocket = io(url)
 onSocket.on('connect', function (res) {
 cb(true,onSocket)
 wsStatus = true
 })
 setTimeout(function(){
 if(!wsStatus){
 cb(false,onSocket)
 }
 },10000)
 }else{
 cb(true,onSocket)
 }
}

let openSocket = require('../../config/socket')
let app = getApp()
let socket = null
Page({
data: {
 zl: [[422, 400, 468, 834, 785, 446, 845, 517, 630, 797, 890, 529, 553, 425, 469, 470, 837, 841, 521, 525], [422, 400, 468, 834, 785, 446, 845, 517, 630, 797, 890, 529, 553, 425, 469, 470, 837, 841, 521, 525]]
},
onLoad: function () {
 let that = this;
 //socket調用
 openSocket.connect(function (status, ws) {
 if (status) {
 socket = ws
 this.subscribe('zl')//對封裝好對訂閱方法進行調用
 socket.on('broadcast', function (msg) {//廣播
 console.log("broadcast");
 console.log(msg);
 })
 } else {
 alert("socket 連接失敗")
 }
 });
},
subscribe: function (type) {
 if (socket) {
 let eis = this.data[type]
 if (eis && eis.length > 0) {
 let param = {//僅供參考，根據接口自行更改
 eis: eis.join(',')
 }
 socket.emit('subscribe', JSON.stringify(param));
 }
 }
}
});