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FileList

An object of this type is returned by the files property of the HTML <input> element; this lets you access the list of files selected with the <input type="file"> element. It's also used for a list of files dropped into web content when using the drag and drop API; see the DataTransfer object for details on this usage.
API File API Files

FileException

In the File System API, a FileException object represents error conditions that you might encounter while accessing the file system using the synchronous API. It extends the FileException interface described in File Writer and adds several new error codes.
API File API File System API filesystem Offline

FileSystemSync

In the File System API, a FileSystemSync object represents a file system. It has two properties.
API File API File System API Files filesystem Offline

LocalFileSystem

The LocalFileSystem interface of the File System API gives you access to a sandboxed file system.  The methods are implemented by window and worker objects.
API File API File System API filesystem Offline Reference Référence

LocalFileSystemSync

The LocalFileSystemSync interface of the File System API gives you access to a sandboxed file system. It is intended to be used with WebWorkers. The methods are implemented by worker objects.
API File API File System API filesystem Offline Reference Référence

Introduction to the File and Directory Entries API

The File and Directory Entries API simulates a local file system that web apps can navigate around. You can develop apps that can read, write, and create files and directories in a sandboxed, virtual file system. 
API beginner Beginner File File and Directory Entries API File System API Guide Introduction Non-standard Non-Standard

FileSystemFileEntry

The FileSystemFileEntry interface of the File System API represents a file in a file system. It offers properties describing the file's attributes, as well as methods for creating a FileWriter object to write to the file or a File object to read the file.
API File and Directory Entries API File API File System API FileEntry Files Interface Offline offline Reference

Blob.type

The type property of a Blob object provides the MIME type of the file. It returns an empty string if the type couldn't determined.
API DOM File Files Property Reference

File

The File interface provides information about files and allows JavaScript in a web page to access their content.
API File API Interface Reference Web

File.name

Returns the name of the file represented by a File object. For security reasons, the path is excluded from this property.
API File API Files Property Reference Référence

FileError

Represents an error that occurs while using the FileReader interface.
API File API Files Obsolete Reference

FileReader

The FileReader object lets web applications asynchronously read the contents of files (or raw data buffers) stored on the user's computer, using File or Blob objects to specify the file or data to read.
API File API Files Interface Reference