textarea component for React which grows with content

autosize, grow, react, react-component, textarea
npm install @ianmclean2011/react-textarea-autosize@7.0.105


npm version npm


Drop-in replacement for the textarea component which automatically resizes textarea as content changes. A native React version of the popular jQuery Autosize! Weighs 1.71KB (minified & gzipped).

This module supports IE9 and above.

import TextareaAutosize from 'react-textarea-autosize';

// If you use CommonJS syntax:
// var TextareaAutosize = require('react-textarea-autosize').default;

    <TextareaAutosize />


npm install react-textarea-autosize




Special props:

prop type description
inputRef func Function invoked with DOM node as argument. Default: () => {}
maxRows number Maximum number of rows upto which the textarea can grow
minRows number Minimum number of rows to show for textarea
onHeightChange func Function invoked on textarea height change, with height as first argument and React component instance (this) as second. Default: () => {}
useCacheForDOMMeasurements boolean Use object cache when computing height of textarea. Default: false

Apart from these, the component accepts all props that are accepted by <textarea/>, like style, onChange, value, etc.


How to focus

Get a ref to inner textarea:

<TextareaAutosize inputRef={tag => (this.textarea = tag)} />

And then call a focus on that ref:


To autofocus:

<TextareaAutosize autoFocus />

(all HTML attributes are passed to inner textarea)

How to test it with jest and react-test-renderer if you need ref

Because jest provides polyfills for DOM objects by requiring jsdom and react-test-renderer doesn't provide refs for rendered components out of the box (calling ref callbacks with null), you need to supply a mocked ref in your tests in you need it for your tests. You can do it like this (more can be read here):

const tree = renderer
  .create(<TextareaAutosize />, {
    createNodeMock: () => document.createElement('textarea')


To release patch, minor or major version:

% npm run release:patch
% npm run release:minor
% npm run release:major

This will run eslint, compile sources from src/ to dist/, bump a version in package.json and then create a new git commit with tag. If tests or linter fails — commit won't be created. If tasks succeed it publishes to npm and pushes a tag to github.