miniprogram-mqtt/lib/uuid.js

*** ##### 初始化 ```javascript //如使用了babel编译至commonjs规范(wepy框架自带) import Mqtt from 'miniprogram-mqtt' const mqtt = new Mqtt({ //必填参数 host: 'host', //mqtt服务器 port: null, //端口 userName: '', //账户名 password: '' //密码

export default function uuid() {
  var s = [];
  var hexDigits = "0123456789abcdef";
  for (var i = 0; i < 36; i++) {
      s[i] = hexDigits.substr(Math.floor(Math.random() * 0x10), 1);
  }
  s[14] = "4";  // bits 12-15 of the time_hi_and_version field to 0010
  s[19] = hexDigits.substr((s[19] & 0x3) | 0x8, 1);  // bits 6-7 of the clock_seq_hi_and_reserved to 01
  s[8] = s[13] = s[18] = s[23] = "-";

  var uuid = s.join("");
  return uuid;
}