为什么wx.navigateBack 调用eventChannel会失败
为什么wx.navigateBack 调用eventChannel会失败？？？？ wx.navigateBack({ delta: 1, success: function(res) { res.eventChannel.emit('pagestaffchoose', data) } }) return MiniProgramError Cannot read property 'emit' of undefined TypeError: Cannot read property 'emit' of undefined at success (http://127.0.0.1:57434/appservice/pages/xxx/xxxxx/xxxx.js:63:30) at Function.forEach.s.<computed> (http://127.0.0.1:57434/appservice/__dev__/WAService.js?t=wechat&s=1646121741371&v=2.19.1:2:2450694) at <api navigateBack success callback function> at Object.success (http://127.0.0.1:57434/appservice/__dev__/WAService.js?t=wechat&s=1646121741371&v=2.19.1:2:114522) at r (http://127.0.0.1:57434/appservice/__dev__/WAService.js?t=wechat&s=1646121741371&v=2.19.1:2:1191114) at http://127.0.0.1:57434/appservice/__dev__/WAService.js?t=wechat&s=1646121741371&v=2.19.1:2:1191297 at v (http://127.0.0.1:57434/appservice/__dev__/WAService.js?t=wechat&s=1646121741371&v=2.19.1:2:1191301) at http://127.0.0.1:57434/appservice/__dev__/WAService.js?t=wechat&s=1646121741371&v=2.19.1:2:1192725 at http://127.0.0.1:57434/appservice/__dev__/asdebug.js:1:48487 at C (http://127.0.0.1:57434/appservice/__dev__/asdebug.js:1:48142)
