nsIDOMFileReader 编辑

The nsIDOMFileReader interface provides a way to read data from a file specified by an nsIDOMFile.

Inherits from: nsISupports

Implemented by: @mozilla.org/files/filereader;1. To create an instance, use:

var FileReader =  Components.classes["@mozilla.org/files/filereader;1"].createInstance(Components.interfaces.nsIDOMFileReader);

This interface implements the DOM FileReader object; see that documentation for details.

Examples

• OS.File for the main thread - Example - Save Canvas to Disk

See also

• File API Specification Working Draft
• nsIDOMFile
• nsIDOMFileList
• nsIDOMFileException