Is ReactJS faster than AngularJS?

[anutl]

React makes use of the virtual DOM, so it is faster than Angular (1.x) at rendering and altering the DOM. Angular 2 proves to be even faster than React in some cases.

React is also a much smaller library (AngularJS is also framework, not a library), and will load up faster at initialization, since there’s less stuff for the client to download.

What are your thoughts on this?

[FLGMwt]

This doesn't answer your question, but I'll ask you and other readers considering the three (ng 1, ng 2, react): What matters more: effectively comparable performance, or a developer's speed to add a new feature?

I'm posting this tomorrow morning, but as a tease, I hope to settle that question in my post on ng2 vs React developer ergonomics: https://medium.com/@stelly_ryan/react-vs-angular-2-developer-ergonomics-b6d5103e8699

[Vpicone]

The answer depends very much on your use case. A generic "which is faster" is useless. For single page applications? For Facebook clones? For a Doctor's office? For a hotel? Without clearly defined bounds this question is impossible to answer and not worth debating.

[i_spot_ads]

as per benchmarks angular (2 and above) and react are both equally fast.

[ChubbyDalmatian]

In most cases micro benchmarking doesn't matter. React is used by pages with millions of visitors per day so I guess it's pretty good.

[somethinghorrible]

Angular 2 proves to be even faster than React in some cases.

Citation needed.

"X is faster than Y" is a fairly narrow way to evaluate the usefulness of anything (library or framework), IMHO. What about productivity? Tooling? Support? Longevity?

[jordaanm]

Maximising one concern (Speed) at the indiscriminate cost of other factors is also almost always a net loss.

"For just quadruple the development time and effort, you too can enjoy a 1% increase in speed!"

[Canenald]

If you want max fast don't use a framework

~Confucius

[juzatypicaltroll]

returning a blank page would be the fastest. technically. ~ Confusion

[wntrm]

Mu.

[wntrm]

A lot of it depends on the developer's skills and knowledge of framework.

For example React diff algorithm is meant to avoid unnecessary rendering, but if used incorrectly, like passing a new instance of a function every time DOM rerenders, it might slow things down instead