第三方平台模式，wx.getExtConfigSync获取不到参数？ if (wx.getExtConfig) { var extConfig = wx.getExtConfigSync(); this.globalData.hosts = extConfig.hosts; this.globalData.imghosts = extConfig.imghosts; this.globalData.mini_program_id = extConfig.mini_program_id; } 求官方解释下疑惑