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It's automatic:

I tried to make the example as minimal as possible, so I don't show off a lot of the features (i.e. state, event handling), but I did use JSX, an optional syntax extension for function calls.

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Thank you, this seems to do it for the innerText. Would it be too hard to apply it to the class attribute too? (I've tried to just copy the {} binding, but it doesn't work)

Here, I gave it a try: http://jsfiddle.net/bD68B/1/

There you go: http://jsfiddle.net/Q2KXu/1/

Thank you both! I now have a much better understanding on how React works. I need to update the related performance benchmarks, it would be interesting to see how they compare side-by-side on our use cases.

Don't forget [PureRenderMixin][1], it can give a big perf boost when used in right places.

[1]: http://facebook.github.io/react/docs/pure-render-mixin.html

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