Using the HTML5 Filesystem API. A True Filesystem for the Browser - Helion
ebook
Autor: Eric BidelmanISBN: 978-14-493-1548-1
stron: 76, Format: ebook
Data wydania: 2011-07-22
Księgarnia: Helion
Cena książki: 67,92 zł (poprzednio: 78,98 zł)
Oszczędzasz: 14% (-11,06 zł)
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
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- 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
- Storage Types
- 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
- Filesystem URLs
- 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