...'readAsDataURL' on 'FileReader': parameter 1 is not of ...
...Failed to execute 'readAsDataURL' on 'FileReaderSync' · ...
'readAsDataURL' on 'FileReader': The argument is not a Blob...
FileReader.readAsDataURL读取指定Blob或File的内容 - jQuery学习...
'readAsDataURL' on 'FileReader': The argument is not a Blob.
FileReader.readAsDataURL() - Web APIs | MDN
'readAsDataURL' on 'FileReader': The a...的中文翻译_百度翻译