We recently presented a live training seminar titled Using HTML5 with ArcGIS. In the seminar we provided an overview of HTML5 and looked at a number of common examples of how to use HTML5 in your GIS applications. We also showed a bunch of tips and tricks to get you started. If you missed the seminar, the recording is available on the Esri Training site.
The seminar included three question and answer sessions. We thought it would be worthwhile to post the five most frequently asked questions along with answers.
1. What is the best way to learn HTML5?
Learn by doing. Dive in (pun intended) and start building sites that use HTML5 features. Start using the new doctype. Use semantic tags. Experiment with things like session storage and the file API. When you get stuck or have questions, reference the any number of great HTML5-centric sites like HTML5 ROCKS and HTML5 Please. Watching the seminar video linked above is also a good start.
3. Is feature x supported in browser y?
The best place to find information for feature support by the various browsers is caniuse.com.
We have published a code assist plug-in for Aptana 2 but have not updated it for Aptana 3. With Aptana 3, the plug-in format changed and we have not yet been successful in updating to the version 3 format. We are looking into publishing a vsdoc for the API that could be used with Visual Studio (and potentially Aptana).
If you had any other lessons learned, thoughts, or resources you want to share, please post a comment.