<Markup> component that renders HTML (or XML) using Virtual DOM, mapping a set of element names to Components. Works beautifully with Preact.
Think of this like an HTML5 renderer where Web Components are implemented as Preact Components.
- Component-base app design and/or layout via HTML
- Define app structure using a standard HTML CMS
- Support arbitrary component extensions by allowing safe HTML
- Build using Custom Elements, implemented using React's API
<Markup /> component takes some
markup, an optional mapping of custom element names to
components, and an optional
type of either
In it's simplest form,
<Markup /> is just a diffing XML/HTML renderer. It only re-renders when you change the
;let html = `<h1>hello</h1> <p>Testing 1 2 3...</p>`;;
Note: by default, content is parsed as XML, which may be too strict for your content but is the fastest option. Pass
type="html"to parse as HTML.
Custom Elements via Components
The real value of
<Markup /> is seen when passing a
components prop. This prop is an Object that lets us map any HTML/XML element name to a preact Component. The mapped component is injected and rendered as if it had been referenced from within JSX. HTML attributes defined on the custom element in
markup get passed to the mapped Component as
;const Sidebar =<aside class="sidebar"><h2> title </h2>children</aside>;let html = `<h1>Hello, World</h1><sidebar title="My Sidebar!"><p>Sidebar contents.</p></sidebar>`;;
render() is invoked, Our
<Sidebar /> component is substituted for the
<sidebar> element, which means it gets mounted and rendered like a normal Preact Component. The result is this HTML DOM:
Hello, WorldMy Sidebar!Sidebar contents.
render()s diff against that DOM just like a normal JSX rendering flow would.
type - By default, content is parsed as XML. Pass
type="html" to use an HTML parser.
onError - Suppress XML/HTML parse errors and instead pass them to this function.
allow-scripts - By default, preact-markup sanitizes the rendered HTML by removing script tags. The
Examplelet markup = `<em>hello!</em><h1>asdflkj</h1><script>alert("Hello world");</script>`;;