hyperscript on hooks
This is a very simple hyperscript library to render elements directly in the DOM. So don't expect a vDOM.
Hooks are supported as well. Hooks have same syntax as React Hooks.
Re-rendering is done by (brutally) removing the affected childs. Scroll-states may get messed-up.
Size is ~1kB minimized and gzipped.
Will work only on modern browsers.
Credits 👏 go to zserge/o for inspiration.
Function h is used to render elements into the DOM.
h(element, props, children)
element can be of type HTML-Node, string or functions (functional components) are accepted.
render(document.body, {}, [
h('span', { className: 'lorem' }, 'Lorem')
h('span', {}, 'ipsum')
])renders as
<body>
<span class="lorem">Lorem</span>
<span>ipsum</span>
</body>Functional components have children passed as props (as with react).
e.g. to render children nodes within a <section>:
// functional component
function Comp ({ children, ...props }) {
return h('section', props, children)
}
// rendering
render(document.body, {}, [
h(Comp, { className: 'red' }, [
h('span', { className: 'lorem' }, 'Lorem')
h('span', {}, 'ipsum')
])
])renders as
<body>
<section class="red">
<span class="lorem">Lorem</span>
<span>ipsum</span>
</section>
</body>import { h, render } from './h.js'
const style = `
body > .red { color: red; }
`
render(document.body, {}, [
h('style', {}, style),
h('h1', { className: 'red' }, [
'hooked hyperscript'
]),
h('p', {}, '<script>/* escaping works */</script>'),
h('p', { style: {
color: 'blue',
textTransform: 'uppercase'
} }, 'Lorem ipsum.'),
h('button', {
onClick: () => alert('clicked'),
style: { marginBottom: '1em' }
}, 'Click me'),
])import { render, h, Fragment, useState } from './h.js'
function Counter (props) {
const style = { padding: '1em' }
const [count, setCount] = useState(0)
return h(Fragment, {}, [
h('button', { style, onClick: () => setCount(count - 1)}, '-'),
h('span', props, count),
h('button', { style, onClick: () => setCount(count + 1)}, '+'),
])
}
render(document.body, {},
h(Counter, { style: { color: 'cyan' } })
)Other hooks like useReducer, useEffect, useMemo, useCallback, useRef and useContext are supported as well.