I had a look through the sample chapters through the book "Ext JS in Action" by Jesus Garcia and the content looks rather exciting. I'm currently working with Java for servlets and application as well as JSP and Javascript for web applications. From what I have seen in the sample chapters, it seems that Ext JS is a combination of Java and Javascript which would be a good news for a programmer like me.
Apart from that, the cross-browser functionality would be great so that no customization is required for different target users and browsers.
I would like to know, is Ext JS considered as client-side or server-side? Does the user need to install any program/software to run Ext JS application?
Apart from that, is the syntax similar to Javascript or Java?
I haven't had much time to go through Ext JS but from I've read, it seems to be very interesting
Thank you.