The proactive web front-end framework for the unprofessional
Facts - not highlights, just facts:
- Alternative to React + Redux or Vue + Vuex
- Written in TypeScript
- No virtual dom
- Support for Deno (without jspm or pika)
- Nothing reactive - totally unreactive - fundamentally different from React
- One global observable state
- Support for re-usable components (with partition of global state)
- No local state
- TSX/JSX return pure elements
- Close to DOM
domdom has full support for Deno!
See https://github.com/eirikb/domdom-deno and https://deno.land/x/domdom .
Install:
npm i @eirikb/domdomrun.sh:
npx parcel index.html<body>
<script type="module" src="app.tsx"></script>
</body>import domdom from '@eirikb/domdom';
const { React, init } = domdom({});
const view = <div>Hello, world!</div>;
init(document.body, view);Output:
All elements created with tsx are elements which can be instantly referenced.
const element = <span>Hello, world :)</span>;
element.style.color = 'red';Output:
By creating a function you create a Domponent (component).
const Button = () => <button>I am button!</button>;
const view = (
<div>
<Button />
</div>
);Output:
It's possible to pass in children, and get a callback when a domponent is mounted (in DOM).
All attributes are passed in first argument.
const Button = ({ color }: { color: string }, { mounted, children }: Opts) => {
const button = <button>Hello {children}</button>;
mounted(() => (button.style.color = color));
return button;
};
const view = (
<div>
<Button color="blue">World!</Button>
</div>
);Output:
All attributes starting with 'on' are added to addEventListener on the element.
const view = (
<button
onClick={(event: Event) => {
event.target.style.color = 'red';
}}
>
Click me!
</button>
);Output:
State handling in domdom is simple: No local state, only one huge global state.
Setting data directly on the data object can update DOM directly in combination with don
interface Data {
hello: string;
}
const { React, init, don, path } = domdom<Data>({
hello: 'World!',
});
const view = <span>{don(path().hello)}</span>;Output:
interface User {
name: string;
}
interface Data {
users: User[];
}
const { React, init, don, path } = domdom<Data>({
users: [{ name: 'Hello' }, { name: 'World' }],
});
const view = (
<ul>
{don(path().users.$).map(user => (
<li>{user.name}</li>
))}
</ul>
);Output:
interface User {
name: string;
}
interface Data {
users: User[];
}
const { React, init, don, data, path } = domdom<Data>({
users: [{ name: 'Hello' }, { name: 'World' }, { name: 'Yup' }],
});
const view = (
<div>
<ul>
{don(path().users.$).map(user => (
<li>{don(path(user).name)}</li>
))}
</ul>
<button onClick={() => (data.users[1].name = '🤷')}>Click me!</button>
</div>
);Output:
interface Data {
hello: string;
}
const { React, init, don, path, data } = domdom<Data>({
hello: 'World!',
});
const view = (
<div>
<div>A: Hello, {data.hello}</div>
<div>B: Hello, {don(path().hello)}</div>
<div>
<button onClick={() => (data.hello = 'there!')}>Click me!</button>
</div>
</div>
);Output:
interface Data {
toggle: boolean;
}
const { React, init, don, path, data } = domdom<Data>({
toggle: false,
});
const view = (
<div>
<button onClick={() => (data.toggle = !data.toggle)}>Toggle</button>
<button disabled={don(path().toggle)}>A</button>
<button disabled={don(path().toggle).map(res => !res)}>B</button>
</div>
);Output:
interface Data {
hello: string;
}
const { React, init, don, path } = domdom<Data>({
hello: 'World!',
});
const view = (
<div>
<div>Hello, {don(path().hello)}</div>
<div>
<input type="text" bind="hello" />
</div>
</div>
);Output:
Aggregate data. Supports:
mapsortslicefilter
And in addition accompanying "on" version, making it possible to listen for an external path:
mapOnsortOnsliceOnfilterOn
interface User {
name: string;
}
interface Data {
users: User[];
}
const { React, init, don, path } = domdom<Data>({
users: [{ name: 'Yup' }, { name: 'World' }, { name: 'Hello' }],
});
const view = (
<ul>
{don(path().users.$)
.filter(user => user.name !== 'World')
.sort((a, b) => a.name.localeCompare(b.name))
.map(user => (
<li>{user.name}</li>
))}
</ul>
);Output:
How to handle common tasks with domdom
import domdom from '@eirikb/domdom';
type Route = 'panel-a' | 'panel-b';
interface Data {
route: Route;
}
const { React, init, don, path, data } = domdom<Data>({ route: 'panel-a' });
const PanelA = () => (
<div>
Panel A :) <button onclick={() => gotoRoute('panel-b')}>Next panel</button>
</div>
);
const PanelB = () => <div>Panel B! (hash is: {window.location.hash})</div>;
const view = (
<div>
{don(path().route).map((route: Route) => {
switch (route) {
case 'panel-b':
return <PanelB />;
default:
return <PanelA />;
}
})}
</div>
);
function gotoRoute(route: Route) {
window.location.hash = route;
}
window.addEventListener(
'hashchange',
() => (data.route = window.location.hash.slice(1) as Route)
);
init(document.body, view);Output:
This is how I would suggest putting domdom in its own file for importing.
import { data, don, init, path, React } from './domdom';
const view = <div>Hello, {don(path().hello)}</div>;
data.hello = 'There :)';
init(document.body, view);import domdom from '@eirikb/domdom';
export interface Data {
hello: string;
}
const dd = domdom<Data>({ hello: 'world' });
export const React = dd.React;
export const init = dd.init;
export const data = dd.data;
export const don = dd.don;
export const path = dd.path;Output:
At writing moment domdom doesn't have any unmount callback. I'm not a big fan of destructors, unmounted, dispose or similar. This might seem silly, and it might not be obvious how to use say setInterval, without this preventing the element from ever being cleaned up by garbage collector.
This is how I would suggest putting domdom in its own file for importing.
import domdom from '@eirikb/domdom';
interface Data {
run: boolean;
tick: number;
}
const { React, init, don, path, data } = domdom<Data>({
run: false,
tick: 0,
});
const view = (
<div>
<img
src="https://i.imgur.com/rsD0RUq.jpg"
style={don(path().tick).map(tick => ({ rotate: `${tick % 180}deg` }))}
/>
<button onClick={() => (data.run = !data.run)}>Start/Stop</button>
</div>
);
(function loop(time) {
if (data.run) {
data.tick = time;
}
requestAnimationFrame(loop);
})(0);
init(document.body, view);