FileReaderSync.readAsText()
シンタックス
readAsText(File); readAsText(Blob); readAsText(File, encoding); readAsText(Blob, encoding);
パラメータ
戻り値
入力データを表す DOMString
。
例外
The following exceptions can be raised by this method:
NotFoundError
- is raised when the resource represented by the DOM
File
orBlob
cannot be found, e.g. because it has been erased. SecurityError
- is raised when one of the following problematic situation is detected:
- the resource has been modified by a third party;
- too many read are performed simultaneously;
- the file pointed by the resource is unsafe for a use from the Web (like it is a system file).
NotReadableError
- is raised when the resource cannot be read due to a permission problem, like a concurrent lock.
EncodingError
- is raised when the resource is a data URL and exceed the limit length defined by each browser.
仕様
仕様書 | ステータス | コメント |
---|---|---|
File API readAsText の定義 |
草案 | 初期定義 |
ブラウザの互換性
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