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angularjs - Performance issue with React

I read about React being very fast. Recently, I wrote an app to test react against angular. Unfortunately I found react performing slower than angular. http://shojib.github.io/ngJS/#/speedtest/react/1

Here is the source code for react. I'm very new to react. I am sure I'm doing something wrong with my react code here. I find it unusually slow. https://jsbin.com/viviva/edit?js,output

See if any react experts can find the bottlenecks.


Update 1:

  1. Removed the usage of context.
  2. Better usage of setState.
  3. Better usage of shouldComponentUpdate.

I still can't make it faster than angular or even close to it. https://jsbin.com/viviva/96/edit?js,output


Update 2:

I made a big mistake by creating 2d arrays in the cell component. So I moved them to a mixin. Now I believe that react is faster than angular in DOM manipulations. https://jsbin.com/nacebog/edit?html,js,output


Update 3:

My mistake again. I did it wrong which made it faster. After analysis, it was rendering incorrectly. If anyone can help me understand, if this could be any faster. I know react is not good at dealing large arrays. In this scenario, it's dealing with four 3d arrays. https://jsbin.com/viviva/100/edit?html,css,js

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React's performance is exaggerated. It's fast enough for most real use cases. Rendering large lists is its main weakness.


Also this always returns true (unless the update is triggered by setState). You need to shallow compare the props.

  shouldComponentUpdate: function(nextProps, nextState) {
    return this.props !== nextProps;
  }

And you should be using props in the places you're using context.


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