37 lines
945 B
Markdown
37 lines
945 B
Markdown
---
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title: Uncontrolled input field
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tags: components,input
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expertise: intermediate
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cover: blog_images/digital-nomad-15.jpg
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firstSeen: 2019-08-21T12:28:50+03:00
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lastUpdated: 2020-11-03T21:08:39+02:00
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---
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Renders an uncontrolled `<input>` element that uses a callback function to inform its parent about value updates.
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- Use the `defaultValue` passed down from the parent as the uncontrolled input field's initial value.
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- Use the `onChange` event to fire the `onValueChange` callback and send the new value to the parent.
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```jsx
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const UncontrolledInput = ({ defaultValue, onValueChange, ...rest }) => {
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return (
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<input
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defaultValue={defaultValue}
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onChange={({ target: { value } }) => onValueChange(value)}
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{...rest}
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/>
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);
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};
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```
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```jsx
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ReactDOM.render(
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<UncontrolledInput
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type="text"
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placeholder="Insert some text here..."
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onValueChange={console.log}
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/>,
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document.getElementById('root')
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);
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```
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