hast-util-to-dom
hast utility to transform to a DOM tree.
Contents
- What is this?
- When should I use this?
- Install
- Use
- API
- Syntax tree
- Types
- Compatibility
- Security
- Related
- Contribute
- License
What is this?
This package is a utility that creates a DOM tree (defaulting to the actual DOM
but also supporting things like jsdom) from a hast (HTML) syntax
tree.
When should I use this?
You can use this project when you want to turn hast into a DOM in browsers,
either to use it directly on a page, or to enable the use of DOM APIs (such as
querySelector to find things or innerHTML to serialize stuff).
The hast utility hast-util-from-dom does the inverse of
this utility.
It turns DOM trees into hast.
The rehype plugin rehype-dom-stringify wraps this
utility to serialize as HTML with DOM APIs.
Install
This package is ESM only. In Node.js (version 16+), install with npm:
npm install hast-util-to-domIn Deno with esm.sh:
import {toDom} from 'https://esm.sh/hast-util-to-dom@4'In browsers with esm.sh:
<script type="module">
import {toDom} from 'https://esm.sh/hast-util-to-dom@4?bundle'
</script>Use
Say our page example.html looks as follows:
<!doctype html>
<title>Example</title>
<body>
<script type="module">
import {h} from 'https://esm.sh/hastscript?bundle'
import {toDom} from 'https://esm.sh/hast-util-to-dom?bundle'
const tree = h('main', [
h('h1', 'Hi'),
h('p', [h('em', 'Hello'), ', world!'])
])
document.body.append(toDom(tree))
</script>Now running open example.html shows the main, h1, and p elements on the
page.
API
This package exports the identifier toDom.
There is no default export.
toDom(tree[, options])
Turn a hast tree into a DOM tree.
Parameters
Returns
DOM node (DomNode).
AfterTransform
Callback called when each node is transformed (TypeScript type).
Parameters
Returns
Nothing.
Options
Configuration (TypeScript type).
Fields
-
afterTransform(AfterTransform, optional) — callback called when each node is transformed -
document(Document, default:globalThis.document) — document interface to use. -
fragment(boolean, default:false) — whether to return a DOM fragment (true) or a whole document (false) -
namespace(string, default: depends) — namespace to use to create elements
Syntax tree
The syntax tree is hast.
Types
This package is fully typed with TypeScript.
It exports the additional types AfterTransform and
Options.
Compatibility
Projects maintained by the unified collective are compatible with maintained versions of Node.js.
When we cut a new major release, we drop support for unmaintained versions of
Node.
This means we try to keep the current release line, hast-util-to-dom@^4,
compatible with Node.js 16.
Security
Use of hast-util-to-dom can open you up to a
cross-site scripting (XSS) attack if the hast tree is unsafe.
Use hast-util-santize to make the hast tree safe.
Related
-
hast-util-sanitize— sanitize hast nodes -
hast-util-to-html— serialize as HTML -
hast-util-from-dom— create a hast tree from a DOM tree
Contribute
See contributing.md in syntax-tree/.github for
ways to get started.
See support.md for ways to get help.
This project has a code of conduct. By interacting with this repository, organization, or community you agree to abide by its terms.