DataTransfer.mozTypesAt()

Non-standard
This feature is non-standard and is not on a standards track. Do not use it on production sites facing the Web: it will not work for every user. There may also be large incompatibilities between implementations and the behavior may change in the future.

The DataTransfer.mozTypesAt() method returns a list of the format types that are stored for an item at the specified index. If the index is not in the range from 0 to the number of items minus one, an empty string list is returned.

Note: This method is Gecko-specific.

Syntax

nsIVariant dataTransfer.mozTypesAt(index);

Arguments

index
A unsigned long that is the index of the data for which to retrieve the types.

Return value

nsIVariant
A list of data formats (which are strings). If the index is not in the range from 0 to the number of items minus one, an empty string list is returned.

Example

This example shows the use of the mozTypesAt() method in a drop event handler.

function drop_handler(event)
{
  var dt = event.dataTransfer;
  var count = dt.mozItemCount;
  output("Items: " + count + "\n");

  for (var i = 0; i < count; i++) {
    output(" Item " + i + ":\n");
    var types = dt.mozTypesAt(i);
    for (var t = 0; t < types.length; t++) {
      output("  " + types[t] + ": ");
      try {
        var data = dt.mozGetDataAt(types[t], i);
        output("(" + (typeof data) + ") : <" + data + " >\n");
      } catch (ex) {
        output("<>\n");
        dump(ex);
      }
    }
  }
}

Specifications

This method is not defined in any Web standard.

Browser compatibility

Update compatibility data on GitHub
DesktopMobile
ChromeEdgeFirefoxInternet ExplorerOperaSafariAndroid webviewChrome for AndroidEdge MobileFirefox for AndroidOpera for AndroidSafari on iOSSamsung Internet
Basic support
ExperimentalNon-standard
Chrome No support NoEdge No support NoFirefox Full support YesIE No support NoOpera No support NoSafari No support NoWebView Android No support NoChrome Android No support NoEdge Mobile No support NoFirefox Android ? Opera Android No support NoSafari iOS No support NoSamsung Internet Android No support No

Legend

Full support  
Full support
No support  
No support
Compatibility unknown  
Compatibility unknown
Experimental. Expect behavior to change in the future.
Experimental. Expect behavior to change in the future.
Non-standard. Expect poor cross-browser support.
Non-standard. Expect poor cross-browser support.

See also

Document Tags and Contributors

Contributors to this page: fscholz, rolfedh, AFBarstow
Last updated by: fscholz,