hast-util-to-dom
hast utility to transform to a DOM tree.
Contents
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 14.14+ or 16.0+), install with npm:
npm install hast-util-to-dom
In Deno with esm.sh
:
import {toDom} from 'https://esm.sh/hast-util-to-dom@3'
In browsers with esm.sh
:
<script type="module">
import {toDom} from 'https://esm.sh/hast-util-to-dom@3?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
tree
(HastNode
)
— tree to transformoptions
(Options
, optional)
— configuration
Returns
DOM node (DomNode
).
AfterTransform
Callback called when each node is transformed (TypeScript type).
Parameters
hastNode
(HastNode
)
— hast node that was handleddomNode
(DomNode
)
— corresponding DOM node
Returns
Nothing.
Options
Configuration (TypeScript type).
Fields
afterTransform
(AfterTransform
, optional)
— callback called when each node is transformeddocument
(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 all maintained
versions of Node.js.
As of now, that is Node.js 14.14+ and 16.0+.
Our projects sometimes work with older versions, but this is not guaranteed.
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
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.
License
ISC © Keith McKnight