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2 changes: 1 addition & 1 deletion src/content/learn/index.md
Original file line number Diff line number Diff line change
Expand Up @@ -247,7 +247,7 @@ return (
);
```

Notice how `<li>` has a `key` attribute. For each item in a list, you should pass a string or a number that uniquely identifies that item among its siblings. Usually, a key should be coming from your data, such as a database ID. React uses your keys to know what happened if you later insert, delete, or reorder the items.
Notice how `<li>` has a `key` attribute. React requires keys to distinguish each item from the others. For each item in a list, you should pass a string or a number that uniquely identifies that item among its siblings. Usually, a key should be coming from your data, such as a database ID. React uses your keys to know what happened if you later insert, delete, or reorder the items. The keys are specific to a particular list of items.

<Sandpack>

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