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Add information on element keys in JSX Gotchas #6751

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jimfb merged 1 commit into from
May 13, 2016
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Add information on element keys in JSX Gotchas #6751

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4 changes: 2 additions & 2 deletions docs/docs/02.3-jsx-gotchas.md
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Expand Up @@ -40,10 +40,10 @@ A safer alternative is to find the [unicode number corresponding to the entity](
<div>{'First ' + String.fromCharCode(183) + ' Second'}</div>
```

You can use mixed arrays with strings and JSX elements.
You can use mixed arrays with strings and JSX elements. Each JSX element in the array needs a unique key.

```javascript
<div>{['First ', <span>&middot;</span>, ' Second']}</div>
<div>{['First ', <span key="middot">&middot;</span>, ' Second']}</div>
```

As a last resort, you always have the ability to [insert raw HTML](/react/tips/dangerously-set-inner-html.html).
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