autosize

Autosize is a small, stand-alone JavaScript library that automatically adjusts textarea height to fit the content. It allows textareas to grow in height dynamically as the user types, providing a smooth and intuitive user experience without the need for scroll bars.

Pros

• Lightweight and dependency-free
• Easy to implement with minimal setup
• Works across modern browsers and devices
• Customizable with various options and callbacks

Cons

• Limited to textarea elements only
• May not work well with complex layouts or dynamic content
• Requires JavaScript to function, no CSS-only fallback
• Not actively maintained (last update was in 2018)

Code Examples

1. Basic usage:

// Initialize autosize on a textarea
autosize(document.querySelector('textarea'));

2. Using with multiple elements:

// Apply autosize to all textareas on the page
autosize(document.querySelectorAll('textarea'));

3. Triggering a resize manually:

// Get a reference to the textarea
var textarea = document.querySelector('textarea');

// Initialize autosize
autosize(textarea);

// Later, trigger a resize manually
autosize.update(textarea);

4. Destroying autosize:

// Remove autosize functionality from a textarea
autosize.destroy(document.querySelector('textarea'));

Getting Started

To use Autosize in your project, follow these steps:

1. Include the Autosize script in your HTML file:

<script src="https://cdnjs.cloudflare.com/ajax/libs/autosize.js/4.0.2/autosize.min.js"></script>

2. Apply Autosize to your textarea(s) in your JavaScript code:

document.addEventListener('DOMContentLoaded', function() {
  // Apply to a single textarea
  autosize(document.querySelector('textarea'));

  // Or apply to multiple textareas
  autosize(document.querySelectorAll('textarea'));
});

That's it! Your textareas will now automatically resize to fit their content as users type.