The HTMLInputElement.multiple property indicates if an input can have more than one value. Firefox currently only supports multiple for <input type="file">.


// fileInput is a <input type=file multiple>
let fileInput = document.getElementById('myfileinput');

if (fileInput.multiple == true) {

  for (let i = 0; i < fileInput.files.length; i++) {
    // Loop fileInput.files

// Only one file available
} else {
  let file = fileInput.files.item(0);

See also


Specification Status Comment
HTML Living Standard
The definition of 'multiple' in that specification.
Living Standard

Browser compatibility

Update compatibility data on GitHub
ChromeEdgeFirefoxInternet ExplorerOperaSafariAndroid webviewChrome for AndroidFirefox for AndroidOpera for AndroidSafari on iOSSamsung Internet
multipleChrome Full support YesEdge Full support 12Firefox Full support 3.6IE ? Opera 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 Full support Yes


Full support  
Full support
Compatibility unknown  
Compatibility unknown