FileReader: error event

The error event is fired when the read failed due to an error (for example, because the file was not found or not readable).

Bubbles No
Cancelable No
Interface ProgressEvent
Event handler property FileReader.onerror

Examples

const fileInput = document.querySelector('input[type="file"]');
const reader = new FileReader();

function handleSelected(e) {
    const selectedFile = fileInput.files[0];
    if (selectedFile) {

        reader.addEventListener('error', () => {
            console.error(`Error occurred reading file: ${selectedFile.name}`);
        });

        reader.addEventListener('load', () => {
            console.error(`File: ${selectedFile.name} read successfully`);
        });

        reader.readAsDataURL(selectedFile);
    }
}

fileInput.addEventListener('change', handleSelected);

Specifications

Specification Status
File API Working Draft

Browser compatibility

Update compatibility data on GitHub
DesktopMobile
ChromeEdgeFirefoxInternet ExplorerOperaSafariAndroid webviewChrome for AndroidFirefox for AndroidOpera for AndroidSafari on iOSSamsung Internet
error eventChrome Full support YesEdge Full support YesFirefox Full support YesIE Full support YesOpera Full support YesSafari Full support YesWebView Android Full support YesChrome Android Full support YesFirefox Android Full support YesOpera Android Full support YesSafari iOS Full support YesSamsung Internet Android ?

Legend

Full support  
Full support
Compatibility unknown  
Compatibility unknown

See also