Lightweight tooling around DOM creation. Designed to be embedded piecewise in self-contained Web Components.

I love virtual DOM libraries like superfine, preact, and inferno. But not all creations need the efficient updating logic. Creations like self-sufficient Web Components, where every byte of superfluous logic is wasted.

The imm-dom library enables concise expression of DOM creation, while never setting innerHTML with uncontrolled content. Elements are created using createElement() or createElementNS(). Strings become Text nodes via createTextNode() or elem.append(). Attributes are set using elem.setAttribute(). DOM injection is protected against, in conjunction with caution and expertise, to provide tools for dynamic content.

See the mini demo and the demo's index.html source.

imm-dom provdes layers of DOM tools:

• Creating new DOM elements, both HTML and SVG
• Manipulating (existing) DOM elements
• Defining Web Components
• Misc utilities: promises, deferreds, render animation frames, etc.

Read more in docs/README.md

<section>
  <imm-demo-cdn data-demo=yes kind=awesome title='my demo title'>
    some body text for the CDN demo
  </imm-demo-cdn>

  <script type=module>
    import {imm_html as h, ImmElem} from 'https://cdn.jsdelivr.net/npm/imm-dom@latest/esm/index.mjs'

    ImmElem.elem('imm-demo-cdn', ns =>
      h.article(
        {class: ns.kind},
        h.h3(`${ns.title}`),
        h.slot('Body text Slot')) )
  </script>
</section>

Inspired by:

• uce

imm_html.article({class: 'awesome'},
  imm_html.h3('my demo title'),
  'some body text')

// or

tag('article', {class: 'awesome'},
  tag('h3', 'my demo title'),
  'some body text')

Inspired by:

• hyperscript
• superfine
• crel
• jaml
• jsonml
• hast

imm_tmpl`
  <article ${ {class: 'awesome'} }>
    <h3>${ 'my demo title' }</h3>
    ${ 'some body text' }
  </article>`

Inspired by:

• uce and uhtml

• imm_raf() returns a promise for the next requestAnimationFrame tick.
• ImmRAF is like ImmElem using requestAnimationFrame to decouple attribute updates from rendering.

To be embedded in each web component custom element, the individual pieces must be small.

The entire library is ~ 7800 bytes minified; ~ 3100 brotli. However, the library is designed to include only the parts actually used. Perfect for pairing with a tree-shaking tool like rollup.

See auto-generated compressed size report.

BSD 2-clause