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@ -419,7 +419,7 @@ On this page you learned: |
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* How to move data out of components and into data structures like arrays and objects. |
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* How to generate sets of similar components with JavaScript's `map()`. |
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* How to create arrays of filtered items with Javascript's `filter()`. |
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* How to create arrays of filtered items with JavaScript's `filter()`. |
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* Why and how to set `key` on each component in a collection so React can keep track of each of them even if their position or data changes. |
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</Recap> |
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