Web/API/FileReader/error

The FileReader error property returns the error that occurred while reading the file.

Syntax

var error = instanceOfFileReader.error

Value

A DOMError containing the relevant error. In Chrome 48+/Firefox 58+ this property returns a DOMException because DOMError has been removed from the DOM standard.

Specifications

Specification	Status	Comment
File APIThe definition of 'FileReader: error' in that specification.	Working Draft	Initial definition

Browser compatibility

Update compatibility data on GitHub

	Desktop						Mobile
	Chrome	Edge	Firefox	Internet Explorer	Opera	Safari	Android webview	Chrome for Android	Firefox for Android	Opera for Android	Safari on iOS	Samsung Internet
`error`	Chrome Full support 7	Edge Full support 12	Firefox Full support 3.6 Notes' Full support 3.6 Notes' Notes' Prior to Firefox 13, the `error` property returned a `FileError` object. Notes' From Firefox 13 to Firefox 58, the `error` property returned a `DOMError` object. Notes' From Firefox 58, the `error` property returns a `DOMException` object.	IE Full support 10 Notes' Full support 10 Notes' Notes' The `error` property returns a `DOMError` object.	Opera Full support 11	Safari Full support 6 Notes' Full support 6 Notes' Notes' The `error` property returns a `DOMError` object.	WebView Android Full support Yes	Chrome Android Full support Yes	Firefox Android Full support 32 Notes' Full support 32 Notes' Notes' From Firefox 32 to Firefox 58, the `error` property returned a `DOMError` object. Notes' From Firefox 58, the `error` property returns a `DOMException` object.	Opera Android Full support 11	Safari iOS Full support 6.1 Notes' Full support 6.1 Notes' Notes' The `error` property returns a `DOMError` object.	Samsung Internet Android Full support Yes

Legend

Full support: Full support
See implementation notes.': See implementation notes.