小程序-获取openid

console.log(res.code) //这就是code
        wx.request({
          url: 'https://zjite.applinzi.com?code='.res.code,
          method: "GET",
          header: {
            'content-type': 'application/json'
          },
          success: function (res) {
            openid = res.data.openid //返回openid
            console.log('openid') //这就是code
          }
        })