What is HP's webOS?

What is webOS? Is it based on Palm OS, or is it different? What language do devel开发者_如何转开发opers need to know to develop apps for it?

I've heard it's cross-platform, using JavaScript. Is knowledge of JavaScript all that's needed to develop any type of application? How can I developer native applications for it?

You could build using JavaScript, C, C++

A webcast on webOS by Mitch Allen, CTO of palm

http://www.youtube.com/watch?v=YXS3SQauwPE

Here's from HP themselves...

http://developer.palm.com/index.php?option=com_content&view=article&id=1761&Itemid=26

Perhaps start with an overview:

http://en.wikipedia.org/wiki/WebOS