`TextArea`¶

Collect multi-line plain text.


Import	`from hedron import TextArea`
Distribution	`hedron`
Backend activity	No
Normal render mode	`RenderMode.FRAGMENT`

Live demo¶

Deployment notes

The preview is a local docs simulation (not a running Hedron server). Interactive demos show a “Simulated HTMX” trace when applicable.

Basic use¶

from hedron import TextArea

component = TextArea('notes', rows=6, placeholder='Add deployment context…')

Compose under Page for full documents, or return from a fragment route for HTMX swaps.

How it works¶

The value is rendered as escaped text content, not as an HTML value attribute. Browsers retain native selection, resizing, and keyboard behavior.

This component's core behavior is server-rendered HTML and does not require a browser runtime. The preview is ordinary semantic HTML, so keyboard, form, link, and disclosure behavior comes from the platform.

Constructor and parameters¶

TextArea(name, *, id=None, value='', rows=4, required=False, placeholder=None)

Parameter	Type	Meaning
`name`	`str`	Submitted field name.
`id`	`str \| None`	Control ID.
`value`	`str`	Text between the textarea tags.
`rows`	`int`	Initial visible row count.
`required`	`bool`	Native required constraint.
`placeholder`	`str \| None`	Optional example or hint.

Composition and backend behavior¶

Keep TextArea at the smallest semantic boundary. Fragment routes should return only the replaced region and preserve stable target IDs across success, validation, empty, loading, and error responses.

This component is primarily presentational; keep any mutation on an explicit action or component route.

Accessibility¶

Use a visible label and explain format or length expectations before the control.

Security¶

Escaping and SafeUrl / TrustedHtml are framework concerns; authorization and data exposure remain application code. Redact secrets before rendering.

Common mistakes¶

Do not accept rich HTML through TextArea without a separate sanitization and trust pipeline.
Do not copy docs-preview JavaScript into an application server.

Testing¶

from hedron import RenderMode, render

result = render(component, mode=RenderMode.FRAGMENT)
assert result.html
assert not result.diagnostics

All component demos · Built-in API · Testing

TextArea¶