re-frame/docs/FAQs/Null-Dispatched-Events.md

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### Question
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If I `dispatch` a js event object (from a view), it is nullified
by the time it gets to the event-handler. What gives?
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### Answer
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So there's two things to say about this:
- if you want to `dispatch` a js event object to a re-frame
event handler, you must call `(.persist event)` before the `dispatch`.
React recycles events (using a pool), and re-frame event handlers
run async. [Find out more here](https://facebook.github.io/react/docs/events.html)
- it is probably more idiomatic to extract the salient data from the event
and `dispatch` that, rather than the js event object itself. When you
`dispatch` pure, simple cljs data (ie. rather than js objects) testing
and debugging will become easier.
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***
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Up: [FAQ Index](README.md)      
2016-12-18 12:42:45 +00:00
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