提示downloadFile不存在
VM854:1 thirdScriptError
Cannot read property 'downloadFile' of undefined; [Component] Event Handler Error @ pages/cloud/cloud#bound downloadfile
TypeError: Cannot read property 'downloadFile' of undefined
? ? at c.downloadfile (http://127.0.0.1:55507/appservice/pages/cloud/cloud.js:98:15)
? ? at Object.o.safeCallback (http://127.0.0.1:55507/appservice/__dev__/WAService.js:15:2390)
? ? at http://127.0.0.1:55507/appservice/__dev__/WAService.js:17:17303
? ? at p (http://127.0.0.1:55507/appservice/__dev__/WAService.js:17:19574)
? ? at http://127.0.0.1:55507/appservice/__dev__/WAService.js:17:18875
? ? at n (http://127.0.0.1:55507/appservice/__dev__/WAService.js:6:8644)
? ? at n (http://127.0.0.1:55507/appservice/appservice?t=1563962013619:1099:27790)
? ? at e.exports.<anonymous> (http://127.0.0.1:55507/appservice/appservice?t=1563962013619:1099:28132)
? ? at http://127.0.0.1:55507/appservice/appservice?t=1563962013619:1099:13287
? ? at Array.forEach (<anonymous>)
2019-07-26
在文件pages/cloud/cloud第98行代碼，有一句是undefined.downloadFile，檢查下這個undefined代表的是什么，看下為什么會是undefined