Summary
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 API The definition of 'FileReader' in that specification. |
Working Draft | Initial definition |
Browser compatibility
Feature | Firefox (Gecko) | Chrome | Edge | Internet Explorer | Opera | Safari |
---|---|---|---|---|---|---|
Basic support | 3.6 (1.9.2)[1] | 7 | (Yes) | 10[2] | 12.02[3] | 6.0.2 |
DOMException value instead of DOMError |
58 (58) | 48 | (Yes) | No support | (Yes) | No support |
Feature | Firefox Mobile (Gecko) | Android | Edge | IE Mobile | Opera Mobile | Safari Mobile |
---|---|---|---|---|---|---|
Basic support | 32 | 3 | (Yes) | 10 | 11.5 | 6.1 |
DOMException value instead of DOMError |
58.0 (58) | (Yes) | No support | (Yes) | No support |
[1] Prior to Gecko 2.0 beta 7 (Firefox 4.0 beta 7), all Blob
parameters below were File
parameters; this has since been updated to match the specification correctly. Prior to Gecko 13.0 (Firefox 13.0 / Thunderbird 13.0 / SeaMonkey 2.10) the FileReader.error
property returned a FileError
object. This interface has been removed and FileReader.error
is now returning the DOMError
object as defined in the latest FileAPI draft.
[2] IE9 has a File API Lab.
[3] Opera has partial support in 11.1.