unified

Project:rehypejs/rehype-slug

Package:rehype-slug@3.0.0

  1. Dependencies:5·Dependents:41
  2. rehype plugin to add id attributes to headings
  1. unified 135
  2. plugin 123
  3. html 100
  4. rehype 70
  5. rehype-plugin 49
  6. heading 25
  7. id 3
  8. slug 2

rehype-slug

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rehype plugin to add ids to headings.

Install

npm:

npm install rehype-slug

Use

Say we have the following file, fragment.html:

<h1>Lorem ipsum 😪</h1>
<h2>dolor—sit—amet</h2>
<h3>consectetur &amp; adipisicing</h3>
<h4>elit</h4>
<h5>elit</h5>

And our script, example.js, looks as follows:

var fs = require('fs')
var rehype = require('rehype')
var slug = require('rehype-slug')

rehype()
  .data('settings', {fragment: true})
  .use(slug)
  .process(fs.readFileSync('fragment.html'), function(err, file) {
    if (err) throw err
    console.log(String(file))
  })

Now, running node example yields:

<h1 id="lorem-ipsum-">Lorem ipsum 😪</h1>
<h2 id="dolorsitamet">dolor—sit—amet</h2>
<h3 id="consectetur--adipisicing">consectetur &#x26; adipisicing</h3>
<h4 id="elit">elit</h4>
<h5 id="elit-1">elit</h5>

API

rehype().use(slug)

Add id properties to h1-h6 headings that don’t already have one.

Uses github-slugger to create GitHub style ids.

Security

Use of rehype-slug can open you up to a cross-site scripting (XSS) attack as it sets id attributes on headings. In a browser, elements are retrievable by id with JavaScript and CSS. If a user injects a heading that slugs to an id you are already using, the user content may impersonate the website.

Always be wary with user input and use rehype-sanitize.

Contribute

See contributing.md in rehypejs/.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

MIT © Titus Wormer