The Notifications API allows web pages to control the display of system notifications to the end user — these are outside the top-level browsing context viewport, so therefore can be displayed even the user has switched tabs or moved to a different app. The API is designed to be compatible with existing notification systems across different platforms.

Landing Notifications permission system

API File File System API

API File API File System API filesystem Offline Reference Référence

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

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

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

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

The create property on the FileSystemFlags dictionary is used to indicate whether or not the file should be created if it's missing. FileSystemFlags is only used when calling FileSystemDirectoryEntry.getFile() or FileSystemDirectoryEntry.getDirectory().

API Create create File and Directory Entries API File System API Files FileSystemFlags Flile System API Non-Standard Non-standard offline Offline Property Reference

API File API File System API filesystem offline Offline Reference Référence

API File and Directory Entries API File System API Files Non-standard Non-Standard Overview Reference

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

API File and Directory Entries API File API File System API filesystem Interface Non-standard Non-Standard offline Offline

API File and Directory Entries API File System API Files filesystem name NeedsExample Non-standard Non-Standard Property Reference

API File and Directory Entries API File System API Files filesystem NeedsExample Non-standard Non-Standard Property Reference root

API createReader File and Directory Entries API File System API Files FileSystemDirectoryEntry Method Non-standard Non-Standard Reference

API File and Directory Entries API File System API Files FileSystemDirectoryEntry getDirectory Method Non-standard Non-Standard Reference

API File and Directory Entries API File System API Files FileSystemDirectoryEntry getFile Method Non-Standard Non-standard Reference

API File and Directory Entries API File System API Files FileSystemDirectoryEntry Method Non-Standard Non-standard Reference removeRecursively

API File and Directory Entries API File System API Files FileSystemDirectoryReader Interface Non-standard Non-Standard offline Offline Reference

API File and Directory Entries API File System API Files FileSystemDirectoryReader Interface Method Non-standard Non-Standard readEntries Reference