Each line goes from 2016 to 2020. A higher point means a technology has been used by more people, and a point further to the right means more users want to learn it; or have used it and would use it again. X-axis rangeNegative opinionsPositive opinionsY-axis rangeHave usedHave not usedReactReactReact. Velocity: 39.2. Overall more negative opinions and/or less usage over time.2016react, 2016:Mostly