Using the HTML5 Filesystem API. A True Filesystem for the Browser - Helion

ebook

Autor: Eric Bidelman
ISBN: 978-14-493-1548-1
stron: 76, Format: ebook
Data wydania: 2011-07-22
Księgarnia: Helion

Cena książki: 67,92 zł (poprzednio: 84,90 zł)
Oszczędzasz: 20% (-16,98 zł)

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Tagi: API | HTML i XHTML - Programowanie

Several client-side storage options are available to web applications, but one area that's been lacking until now is file I/O—the ability to organize binary data into a true hierarchy of folders. That has changed with the advent of HTML5. With this book, you'll learn how to provide your applications with a file system that enables them to create, read, and write files and folders in a sandboxed section of the user's local filesystem.

Author Eric Bidelman, a Senior Developer Programs Engineer on the Google Chrome team, provides several techniques and complete code examples for working with the HTML5 Filesystem API.

Learn common operations for working with files and directories
Become familiar with HTML5's storage use cases and security considerations
Understand the storage options available, including temporary, persistent, and unlimited
Write text or append data to an existing user file
Import files into your application by accessing a user's hard drive
Get techniques for using a file with filesystem, blob, or data URLs
Use the synchronous version of the HTML5 Filesystem API within a Web Worker context

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Spis treści

Using the HTML5 Filesystem API. A True Filesystem for the Browser eBook -- spis treści

Using the HTML5 Filesystem API
- SPECIAL OFFER: Upgrade this ebook with OReilly
- Preface
  - Conventions Used in This Book
  - Using Code Examples
  - Safari Books Online
  - How to Contact Us
- 1. Introduction
  - Use Cases
  - Security Considerations
  - Browser Support
    - A Cautionary Tale
- 2. Storage and Quota
  - Storage Types
    - Temporary Storage
    - Persistent Storage
    - Unlimited Storage
  - Quota Management API
    - Requesting More Storage
    - Checking Current Usage
- 3. Getting Started
  - Opening a Filesystem
  - Handling Errors
- 4. Working with Files
  - The FileEntry
  - Creating a File
  - Reading a File by Name
  - Writing to a File
    - Appending Data to a File
  - Importing Files
    - Using <input type=file>
    - Using HTML5 Drag and Drop
    - Using XMLHttpRequest
    - Using Copy and Paste
  - Removing Files
- 5. Working with Directories
  - The DirectoryEntry
  - Creating Directories
    - Subdirectories
  - Reading the Contents of a Directory
  - Removing Directories
    - Recursively Removing a Directory
- 6. Copying, Renaming, and Moving Entries
  - Copying a File or Directory
  - Moving a File or Directory
  - Renaming a File or Directory
- 7. Using Files
  - Filesystem URLs
    - Summary
  - Blob URLs
    - Summary
  - Data URLs
    - Summary
- 8. The Synchronous API
  - Introduction
  - Opening a Filesystem
  - Working with Files and Directories
  - Handling Errors
  - Examples
    - Fetching All Entries in the Filesystem
    - Downloading Files Using XHR2
- About the Author
- Colophon
- SPECIAL OFFER: Upgrade this ebook with OReilly