Extensions

heading

Node in starterKit <0.1 kB gzipped

Parses h1, h2, h3, h4, h5, h6 · renders h1.

1 · Install

One package for every extension · there is no @matrajs/heading to install. 

npm i @matrajs/core

2 · Add it to the editor

Import it and put it in the extensions array. That array is the whole feature list: what is not in it is not in your bundle and not in the document's schema. 

import { createEditor, document, paragraph, text, heading } from '@matrajs/core'

const editor = createEditor({
  extensions: [document, paragraph, text, heading],
  element: document.querySelector('#editor'),
})

Already in starterKit · if you spread that kit you have this extension and adding it again is a duplicate the schema will reject.

3 · Use it

Run a command, and give focus back · a click on a button takes it away.

editor.commands.setHeading(2)
editor.focus()

From the keyboard: Mod-Alt-1 , Mod-Alt-2 , Mod-Alt-3 , Mod-Alt-4 , Mod-Alt-5 , Mod-Alt-6 .

Wired to a button, with the pressed state kept in step:

const button = document.querySelector('#setHeading')

button.addEventListener('click', () => {
  editor.commands.setHeading(2)
  editor.focus()
})

const read = () => button.setAttribute('aria-pressed', String(editor.isActive('heading')))
editor.on('selectionChange', read)
editor.on('change', read)
read()

Both events, not one. selectionChange covers the caret moving into it; change covers the command that changed it without moving anything. A toolbar wired to only the first goes stale the moment someone uses the keyboard.

Commands

Every one returns true if it changed the document and false if it could not · a command that does not apply where the caret is says so rather than throwing.

Command Call
setHeading editor.commands.setHeading(level: HeadingLevel)
toggleHeading editor.commands.toggleHeading(level: HeadingLevel)

Keyboard shortcuts

Mod is Command on a Mac and Control everywhere else. To rebind one, put your own extension after this in the array · later keys win.

In the document

Attribute Default
level 1

See also

← All 83 extensions

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