i was wondering about the same thing. perhaps the result is a bit skewed because of people searching for the meaning if the fileextension js?
On the other hand, it started to rise in 2007 when ext.js 2.0 was released.
On the other hand, it started to rise in 2007 when ext.js 2.0 was released.
Now these trends focus on a world wide searches. If you look closely at the detail, the number of search for extJs in China, pretty much take the 90% of the searches. And in the U.S. extJs has practically no prescence.
If you look at the detail for AngularJS, most of the searches are in California, New York and India.
So it is really not the best trend analysis, but it does put the power of China into perspective.