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Simple textarea that expand and shrinks depending on the content
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import React, { PropTypes } from 'react' | |
export default class TextareaAutosize extends React.Component { | |
static propTypes = { | |
value: PropTypes.string, | |
className: PropTypes.string, | |
style: PropTypes.object, | |
onChange: PropTypes.func | |
} | |
componentDidMount() { | |
const textarea = this.refs.textarea | |
textarea.style.height = textarea.scrollHeight + 'px' | |
} | |
handleChange = e => { | |
const textarea = this.refs.textarea | |
textarea.style.height = 0 // has to set to 0 for shrinking | |
textarea.style.height = textarea.scrollHeight + 'px' | |
this.props.onChange(e.target.value) | |
} | |
render = () => ( | |
<textarea | |
{...this.props} | |
ref="textarea" | |
rows="1" | |
onChange={this.handleChange} | |
/> | |
) | |
} |
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You can render a component twice and just hide one of the renderings so you're not resizing the input the user is manipulating
https://gist.github.com/moodysalem/52601c137109cf87434b