判断H5页面环境是否在小程序的webview中

isMiniProgram(n){
        return new Promise((resolve, reject) => {
            if(-1 == navigator.userAgent.toLowerCase().indexOf("micromessenger")){
                resolve(false)
                return
            }else{
                wx.miniProgram.getEnv((res) => {
                    if(!res.miniprogram){
                        resolve(false)
                        return
                    }else{                        
                        resolve(true)
                    }
                })  
            }
        })
    }