Top Related Projects
<textarea /> component for React which grows with content
Autosize is a small, stand-alone script to automatically adjust textarea height to fit text.
Modernizr is a JavaScript library that detects HTML5 and CSS3 features in the user’s browser.
Material UI: Comprehensive React component library that implements Google's Material Design. Free forever.
Quick Overview
React Textarea Autosize is a lightweight React component that automatically adjusts the height of a textarea based on its content. It provides a seamless way to create expandable text input areas that grow and shrink with user input, enhancing the user experience and interface design.
Pros
- Easy integration with React applications
- Automatically resizes textarea height based on content
- Supports both controlled and uncontrolled components
- Highly customizable with various props and styling options
Cons
- Limited to textarea elements only
- May require additional styling for consistent appearance across browsers
- Performance impact on very large text inputs or frequent updates
- Doesn't handle horizontal resizing
Code Examples
- Basic usage:
import TextareaAutosize from 'react-textarea-autosize';
function MyComponent() {
return <TextareaAutosize placeholder="Type something..." />;
}
- Controlled component with minimum and maximum rows:
import React, { useState } from 'react';
import TextareaAutosize from 'react-textarea-autosize';
function ControlledTextarea() {
const [value, setValue] = useState('');
return (
<TextareaAutosize
minRows={3}
maxRows={10}
value={value}
onChange={(e) => setValue(e.target.value)}
/>
);
}
- Styling and custom props:
import TextareaAutosize from 'react-textarea-autosize';
function StyledTextarea() {
return (
<TextareaAutosize
style={{ border: '2px solid blue', borderRadius: '5px', padding: '10px' }}
placeholder="Custom styled textarea"
onHeightChange={(height) => console.log('New height:', height)}
/>
);
}
Getting Started
To use React Textarea Autosize in your project, follow these steps:
-
Install the package:
npm install react-textarea-autosize
-
Import and use the component in your React application:
import React from 'react'; import TextareaAutosize from 'react-textarea-autosize'; function App() { return ( <div> <h1>My Autosize Textarea</h1> <TextareaAutosize minRows={3} placeholder="Start typing..." style={{ width: '100%', padding: '10px' }} /> </div> ); } export default App;
This will create a basic autosize textarea with a minimum of 3 rows and custom styling. Adjust the props and styling as needed for your specific use case.
Competitor Comparisons
<textarea /> component for React which grows with content
Pros of react-textarea-autosize
- Lightweight and focused on a single functionality
- Easy to integrate into existing React projects
- Supports both controlled and uncontrolled components
Cons of react-textarea-autosize
- Limited to textarea elements only
- May require additional styling to match specific design requirements
- Doesn't handle complex use cases like rich text editing
Code Comparison
Both repositories contain the same codebase, as they are the same project. Here's a sample of the core functionality:
const TextareaAutosize = React.forwardRef(function TextareaAutosize(
{ onResize, maxRows, minRows, style, ...props },
userRef
) {
const heightRef = useRef(0);
const nodeRef = useRef(null);
const [state, setState] = useState({
height: props.style?.height || 0,
overflow: false,
});
// ... (rest of the component logic)
});
This code snippet showcases the main component structure and how it handles props and state management for the auto-resizing functionality.
Since both repositories are identical, there are no differences to highlight in the code comparison. The project focuses on providing a simple, efficient solution for auto-resizing textareas in React applications.
Autosize is a small, stand-alone script to automatically adjust textarea height to fit text.
Pros of autosize
- Lightweight and framework-agnostic, suitable for use with any JavaScript project
- Supports both modern and legacy browsers, including IE9+
- Simple API with minimal configuration required
Cons of autosize
- Not specifically designed for React, may require additional setup for React projects
- Less actively maintained compared to react-textarea-autosize
- Lacks some React-specific optimizations and features
Code Comparison
react-textarea-autosize:
import TextareaAutosize from 'react-textarea-autosize';
<TextareaAutosize
minRows={3}
maxRows={5}
placeholder="Type something..."
/>
autosize:
import autosize from 'autosize';
const textarea = document.querySelector('textarea');
autosize(textarea);
Key Differences
- react-textarea-autosize is a React-specific component, while autosize is a vanilla JavaScript library
- react-textarea-autosize offers more granular control over min and max rows
- autosize requires manual DOM manipulation, whereas react-textarea-autosize integrates seamlessly with React's component model
- react-textarea-autosize benefits from React's virtual DOM for performance optimizations
Use Cases
- Choose autosize for non-React projects or when a lightweight, framework-agnostic solution is needed
- Opt for react-textarea-autosize in React applications for better integration and React-specific features
Both libraries effectively solve the problem of auto-resizing textareas, but their ideal use cases differ based on the project's technology stack and requirements.
Modernizr is a JavaScript library that detects HTML5 and CSS3 features in the user’s browser.
Pros of Modernizr
- Broader feature detection capabilities across various web technologies
- Widely adopted and well-established in the web development community
- Customizable build process to include only needed feature detections
Cons of Modernizr
- Larger library size, potentially impacting page load times
- Requires more setup and configuration for optimal use
- Not specifically tailored for React applications
Code Comparison
Modernizr usage:
if (Modernizr.flexbox) {
// Browser supports flexbox
} else {
// Fallback for browsers without flexbox support
}
react-textarea-autosize usage:
import TextareaAutosize from 'react-textarea-autosize';
<TextareaAutosize
minRows={3}
maxRows={5}
placeholder="Type something..."
/>
While Modernizr is a comprehensive feature detection library for various web technologies, react-textarea-autosize is a specialized React component for creating auto-resizing textareas. Modernizr offers broader functionality but requires more setup, whereas react-textarea-autosize provides a simpler, more focused solution for React applications needing auto-resizing textareas. The choice between the two depends on the specific project requirements and the scope of feature detection needed.
Material UI: Comprehensive React component library that implements Google's Material Design. Free forever.
Pros of Material-UI
- Comprehensive UI component library with a wide range of pre-built components
- Follows Material Design principles, providing a consistent and modern look
- Extensive documentation and community support
Cons of Material-UI
- Larger bundle size due to the extensive component library
- Steeper learning curve for customization and theming
- May require more setup and configuration for specific use cases
Code Comparison
Material-UI TextField with multiline support:
import TextField from '@mui/material/TextField';
<TextField
multiline
rows={4}
defaultValue="Default Value"
/>
react-textarea-autosize:
import TextareaAutosize from 'react-textarea-autosize';
<TextareaAutosize
minRows={3}
defaultValue="Default Value"
/>
Key Differences
- Material-UI offers a complete UI framework, while react-textarea-autosize focuses solely on auto-resizing textareas
- react-textarea-autosize provides a simpler API for auto-resizing textareas with minimal setup
- Material-UI's TextField component offers more built-in features and styling options
Use Cases
- Choose Material-UI for projects requiring a comprehensive UI library with consistent design
- Opt for react-textarea-autosize when you need a lightweight, focused solution for auto-resizing textareas without additional dependencies
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react-textarea-autosize
Drop-in replacement for the textarea component which automatically resizes textarea as content changes. A native React version of the popular jQuery Autosize! Weighs around 1.3KB (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;
React.renderComponent(
<div>
<TextareaAutosize />
</div>,
document.getElementById('element'),
);
Install
npm install react-textarea-autosize
Demo
https://andarist.github.io/react-textarea-autosize/
Props
Special props:
prop | type | description |
---|---|---|
maxRows | number | Maximum number of rows up to 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. The second function argument is an object containing additional information that might be useful for custom behaviors. Current options include { rowHeight: number } . |
cacheMeasurements | boolean | Reuse previously computed measurements 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.
FAQ
How to focus
Get a ref to inner textarea:
<TextareaAutosize ref={(tag) => (this.textarea = tag)} />
And then call a focus on that ref:
this.textarea.focus();
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'),
})
.toJSON();
Top Related Projects
<textarea /> component for React which grows with content
Autosize is a small, stand-alone script to automatically adjust textarea height to fit text.
Modernizr is a JavaScript library that detects HTML5 and CSS3 features in the user’s browser.
Material UI: Comprehensive React component library that implements Google's Material Design. Free forever.
Convert
designs to code with AI
Introducing Visual Copilot: A new AI model to turn Figma designs to high quality code using your components.
Try Visual Copilot