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An Introduction to HTML5 web messaging
By Tiffany Brown · Wednesday, February 1, 2012 222
HTML5 web messaging provides a way for documents to share data without exposing the DOM to malicious cross-origin scripting. This article provides an introductory guide to using this new functionality, and some simple examples to get you started. Read more…
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HTTP — an application-level protocol
By karlcow · Wednesday, February 1, 2012 17
This is the first of a series of articles to teach HTTP basics, and how we can use it more effectively. In this article we will look at where HTTP cog fits in the Internet machine. HTTP is an application-level protocol on top of the TCP/IP, a communication protocol. Read more…
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getUserMedia: accessing the camera and privacy UI
By Bruce Lawson · Tuesday, January 10, 2012 29
getUserMedia alllows access to a device's camera and microphone. This article shows how to access the camera and demonstrates a Privacy User Interface that Opera is experimenting with. Includes moustaches and exploding cameras. Read more…
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opera.contexts.toolbar.createItem()
By Opera Software · Friday, December 16, 2011 11
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DOM access control using cross-origin resource sharing
By Tiffany Brown · Wednesday, December 14, 2011 8
This article provides an introductory guide to cross origin resource sharing, or CORS, a technology allowing you to control communication and access between resources residing at different origins in a secure manner, getting around problems associated with the traditional same-origin security policy. Read more…
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Better error handling with window.onerror
By karlcow · Wednesday, December 14, 2011 22
In this article we will look at when and how to use window.onerror, a new programmatic error handling mechanism available in JavaScript, including some examples to get you started. Read more…
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Introducing ECMAScript 5.1
By Mike Taylor · Tuesday, December 6, 2011 2
The newest version of ECMAScript to get widespread browser support, ES5, brings with it many useful changes from ES3 and new additions to the language. In this introductory article we'll review these, showing what is available. Read more…
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HTML5 custom protocol and content handlers
By Mike Taylor · Tuesday, December 6, 2011 12
This article introduces the HTML5 custom scheme and content handlers, showing how you can employ them to allow use of custom content types on your sites. Read more…