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Questions tagged [opera-extension]

This tag is dedicated to development of extensions for the Opera browser.

This tag is dedicated to development of extensions for the Opera browser. Opera extensions are being developed using web technologies such as JavaScript, HTML and CSS. Starting points:

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Detect if own Opera extension installed and disabled using JavaScript

I can detect if my Opera extension installed by setting the new window object property (window.isExtensionInstalled for example) in injected script and checking it in web-page javaScript. But this is not solution in case the extension is…
Dmitry
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Opera browser extension extension-reload via function

I'm developing an extension for Opera Browser and I'm searching for a function that is able to reload an Opera extension or an alternative way to solve my problem. I want the user to be able to switch between an old version of the extension (the…
Yatoom
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Injection order in Opera extensions

Suppose I have an extension that has 3 files in includes directory: includes/all.js includes/one.js includes/two.js two.js depends on one.js and both of them have 'guard comments': // ==UserScript== // @include http://*.example.com/* // @include…
Alexander Gromnitsky
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Compile a userscript to a Safari and an Opera extension?

I built a Greasemonkey userscript for Firefox and Chrome, and I now want to convert it to a Safari extension and an Opera extension. Are there any compilers out there like Arantius' Greasemonkey-to-extension compiler but for Opera or Safari?
Alex Bogias
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How to Use OAuth Access Token Obtained with Javascript to Authenticate with PHP

I'm writing an extension for Opera and it will use the Twitter OAuth API. I know it is frowned upon, but I'm implementing the Twitter OAuth with Javascript inside the extension. Please bear with me, because I'm not any pro with OAuth. But here's…
alpenglow
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Opera Storage & Updating preferences

I've been completely stumped for quite a while here. Could anyone tell me what I'm doing wrong? I have set several menus with the IDs like so: