Question

I am opening files without HTTP protocol in Firefox versions 14-16.

I am unable open the indexdb. My syntax is this:

window.indexedDB = window.indexedDB || window.webkitIndexedDB || window.mozIndexedDB || window.msIndexedDB;
var IDBTransaction = window.IDBTransaction || window.webkitIDBTransaction;
var request = window.indexedDB.open(dbname, dbversion);
request.onsuccess = function (evt) {
    alert('Success')
};

With Firebug I am able to see window.mozIndexedDB is null.

In localhost it is working fine, But I need to run without HTTP.

Are any changes are needed to my code?

Answer 1

A lot of stuff is disabled on the file protocol for “security” seasons. I tried to find the reason on the Mozilla site, but they do not mention it on MDN anywhere about the restriction. BUT if you go to the dark side, Microsoft mentions the restriction.

From Microsoft’s site:

Note The following code examples require a browser that supports File
API and Indexed Database API, such as Internet Explorer 10 or later.
Additionally, each example has an associated “Live link”, which links
to a working code sample (using the http protocol). For security
reasons, Indexed Database API only works through the http, https,
ms-wwa, or ms-wwa-web protocols in Windows Internet Explorer. That is,
Internet Explorer doesn’t allow a local HTML page ( file://) to fully
execute the Indexed Database API. Instead, the page must be behind a
supported protocol such as http:// or https://. If convenient, a local
web server can be used to preview IndexedDB pages using the loopback
address (127.0.0.1).