{"json_modified": "2016-09-27T12:02:10.885518", "uuid": "763c644c-9076-413f-809d-2f71c09b19a4", "title": "Introduction to the File and Directory Entries API", "url": "/en-US/docs/Web/API/File_and_Directory_Entries_API/Introduction", "tags": ["API", "Introduction", "Guide", "Non-standard", "File and Directory Entries API", "File System API", "Non-Standard", "File", "beginner", "Beginner"], "translations": [{"uuid": "d3777f9e-d42f-478c-9543-5fd218b68d18", "title": "\u6587\u4ef6\u7cfb\u7edfAPI\u7684\u57fa\u672c\u6982\u5ff5", "url": "/zh-CN/docs/WebGuide/API/File_System/Introduction", "tags": [], "summary": "\u672c\u6587\u662f\u5bf9<a href=\"https://developer.mozilla.org/en-US/docs/DOM/File_APIs/Filesystem/Basic_Concepts_About_the_Filesystem_API\" title=\"https://developer.mozilla.org/en-US/docs/DOM/File_APIs/Filesystem/Basic_Concepts_About_the_Filesystem_API\">Basic_Concepts_About_the_Filesystem_API</a>\u4e00\u6587\u7684\u8bd1\u6587\u3002", "localization_tags": [], "locale": "zh-CN", "last_edit": "2014-05-15T23:04:46", "review_tags": []}], "modified": "2016-09-27T12:02:10", "label": "Introduction to the File and Directory Entries API", "localization_tags": [], "locale": "en-US", "id": 2804, "last_edit": "2016-09-27T12:02:04", "summary": "The <a href=\"/en-US/docs/Web/API/File_and_Directory_Entries_API\">File and Directory Entries API</a> 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\u00a0sandboxed,\u00a0virtual file system.", "sections": [{"id": "Quick_Links", "title": null}, {"id": "About_this_document", "title": "About this document"}, {"id": "Overview", "title": "Overview"}, {"id": "Usefulness_of_the_API", "title": "Usefulness of the API"}, {"id": "The_File_and_Directory_Entries_API_and_other_storage_APIs", "title": "The File and Directory Entries API and other storage APIs"}, {"id": "sample", "title": "Sample use cases"}, {"id": "concepts", "title": "Big concepts"}, {"id": "virtual", "title": "The File and Directory Entries API is a virtual representation of a file system"}, {"id": "storage", "title": "The File and Directory Entries API can use different storage types"}, {"id": "quota", "title": "Browsers impose storage quotas"}, {"id": "version", "title": "The File and Directory Entries API has asynchronous and synchronous versions"}, {"id": "errorcallbacks", "title": "When using the asynchronous API, always use the error callbacks"}, {"id": "interfaces", "title": "The File and Directory Entries API interacts with other APIs"}, {"id": "case", "title": "The File and Directory Entries API is case sensitive"}, {"id": "restrictions", "title": "Restrictions"}, {"id": "origin", "title": "The File and Directory Entries API adheres to the same-origin policy"}, {"id": "execute", "title": "The File and Directory Entries API does not let you create and rename executable files"}, {"id": "sandbox", "title": "The file system is sandboxed"}, {"id": "file", "title": "You cannot run your app from file://"}, {"id": "definitions", "title": "Definitions"}, {"id": "Specifications", "title": "Specifications"}, {"id": "Browser_compatibility", "title": "Browser compatibility"}, {"id": "See_also", "title": "See also"}], "slug": "Web/API/File_and_Directory_Entries_API/Introduction", "review_tags": []}