小程序环境判断

  // 小程序环境
  const Constant = {
     miniProgramEnvironment: {
            alipay: "alipay",
            qq: "qq",
            weixin: "weixin",
            toutiao: "toutiao",
            baidu: "baidu",
            quickapp: "quickapp",
            other: "other",
    }
  },
  /**
   * 小程序判断环境
   * @returns {string}
   */
  determineTheEnvironment() {
 const userAgent = navigator.userAgent;
    if (userAgent.indexOf("AlipayClient") > -1) {
      // 支付宝小程序
      return Constant.miniProgramEnvironment.alipay;
    } else if (/QQ/i.test(userAgent) && /miniProgram/i.test(userAgent)) {
      // qq小程序
      return Constant.miniProgramEnvironment.qq;
    } else if (
      /miniProgram/i.test(userAgent) &&
      /micromessenger/i.test(userAgent)
    ) {
      // 微信小程序
      return Constant.miniProgramEnvironment.weixin;
    } else if (/toutiaomicroapp/i.test(userAgent)) {
      // 头条小程序
      return Constant.miniProgramEnvironment.toutiao;
    } else if (/swan/i.test(userAgent)) {
      // 百度小程序
      return Constant.miniProgramEnvironment.baidu;
    } else if (/quickapp/i.test(userAgent)) {
      // quickapp
      return Constant.miniProgramEnvironment.quickapp;
    } else {
      return Constant.miniProgramEnvironment.other;
    }
  },