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17 lines
620 B
17 lines
620 B
11 years ago
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---
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id: children-prop-type
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title: Type of the children prop
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layout: cookbook
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11 years ago
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permalink: children-prop-type.html
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11 years ago
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prev: style-prop-value-px.html
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next: controlled-input-null-value.html
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11 years ago
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---
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### Problem
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You get errors while manipulating `this.props.children` inside a component.
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### Solution
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Usually, `children` is an array of components. To save an extra array allocation, it returns the component itself when there's only one.
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11 years ago
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This means accessing, for example, `this.props.children.length` might be misleading, as it could either be the `length` property of the array of children, or that of a single string component.
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