Examples
Each one is a real component, running on this page. The source under it is printed from the same file that renders above it, so what you read is what you are looking at.
State and a handler
@compute — derived values, cached
- apples — 3
- bread — 2
- coffee — 9
total: 14total computed 1× · visible computed 1× — typing in the filter recomputes only one of them
@created, @mounted, @destroyed — in order
@Host — the element a component is
Inspect the elements: the first is a real <section>, the second is <ramonda-host>.
Refs — reaching the element
0 characters
@onWindow — a global listener
window is 0px wideresize the browser
@onDocument — a keyboard shortcut
last key: —pressed 0 times — type anywhere on the page
@timeout — cancelled on unmount
waiting 1.5 seconds…
Timeout — started by a click, cleared by teardown
nothing started
@interval — and the two-pass pattern
—updates every second
Cleanup — what a subscription returns
@watchProp — reacting to a prop
showing adano change yet — @watchProp does not fire on mount
Context — a value without threading
a component two levels down:light / pink
@memoized — stable handler identity
- apples
- bread
- coffee
—
createSubscriptionDecorator — external stores
store listeners: 0 — unmounting the component removes its subscription, with nothing in the component to remember it
ErrorBoundary — containing a failure
this row is outside the boundary
@persist — a value from the server
prerendered at 2026-08-21 20:18:04 UTCclient @created ran 0 time(s) — the value above came from the server
list() — lists without keys
click a few counters, then reverse — each count moves with its task
- write the docs
- fix the diff
- ship it
list() — a filtered, conditional list
star a row, then filter — a row that stays keeps its own star, and no row inherits one from a person the filter removed
- Ada compilers
- Grace runtimes
- Edsger semantics
- Barbara genomics
- Katherine trajectories
focusOn — what an immutable edit copies
last: nothing yet
Only what is ON the path gets a new object. `state.users` and `state.posts[0]` come out of every edit as the very same objects, so a shallow compare rejects those branches without looking inside them — which is what makes the diff cheap. Write a value that is already there and nothing is copied at all, not even the root.
Navigator — the live route of this site
pathname/examples
searchParams(none)
→ State→ Lists→ back here, with a query
Reads are per key: a component reading only pathname is not re-rendered when the query changes.
Query — one request per key, cached
Ada Lovelace1843 followers
requests made: 1 — switch back to someone you already viewed and it stays put
Mutation — optimistic, with rollback
Inheritance — the unit of reuse
AsyncLoad — a component in its own chunk
open the network tab — the chunk is preloaded from <head> and fetched once
Loaded at 8:18:04 PM.fetched on demand