The AJAX playground launched early last year with nine APIs. Developers can edit code and see the results without reloading the page. Most of the updates to the playground are for the AJAX Search API: Blog, Book, Image, Local, News, Patent and Video.
Google also added its Calendar API and Google Friend Connect API to the playground. Also, since Google promoted Maps V3 to production, the playground now includes many mapping examples from both versions.
Getting started with any API can be a chore. Providing initial samples is a great way to make it easier. And even better is providing samples that can be edited, as Google has done with its playground.
Interested in other Google APIs? Our directory lists 70 Google APIs.