I'm not sure I wholeheartedly agree with that. The YouTube channel "REACT" could be driving some of these numbers. There's a spike in early 2016 that made me think of it - remember the whole 'REACT' Trademark craze? The Stackoverflow Trends blog post [0] from yesterday is probably more representative.
Try changing the timescale to 3 months or so for react, you get a nearly perfect pulse wave with peaks on weekdays and valleys on the weekends.
The same happens with Javascript, Java and I guess most (popular) programming languages; it might be an imperfect indicator, but one that suggests people are actively searching during their working hours (which I don't think applies to the youtube channel).
It's maybe not perfect, but definitely a lot better than 'Reactjs'. You just have to look at this topic - how many people just say React vs ReactJs. Besides Google seems to know that I'm wanting the JS framework so hopefully its filtering out some of the other unrelated 'React' stuff.
Absolutely. The line before 2014 represents the tiny baseline of people using "React" in other contexts. The entirety of the growth since then is the Javascript library.
Since your line for "Vue" shows no increase in usage after Vue.js came out, while the line for "React" does, I'm not sure this shows what you think it does.
https://stackoverflow.blog/2017/05/09/introducing-stack-over...