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10 lines
646 B
10 lines
646 B
8 years ago
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---
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title: Special Props Warning
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layout: single
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8 years ago
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permalink: warnings/special-props.html
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8 years ago
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---
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Most props on a JSX element are passed on to the component, however, there are two special props (`ref` and `key`) which are used by React, and are thus not forwarded to the component.
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For instance, attempting to access `this.props.key` from a component (eg. the render function) is not defined. If you need to access the same value within the child component, you should pass it as a different prop (ex: `<ListItemWrapper key={result.id} id={result.id} />`). While this may seem redundant, it's important to separate app logic from reconciling hints.
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