---
id: kw-prop
name: prop
category: structure
kind: keyword
tokens: prop
sig: component Name { prop name: Type = default }
tip: A component's value handed in by its parent.
order: 71
---

<code>prop</code> declares a component member its parent sets from the template (<code>&lt;Counter step="2"/&gt;</code>); <code>state</code> declares one the component keeps for itself. Both are fields of the instance, listed with their types and defaults in <code>ludic schema</code>.