marked/docs/USING_ADVANCED.md

The marked function

marked(markdownString [,options] [,callback])

Argument	Type	Notes
markdownString	string	String of markdown source to be compiled.
options	object	Hash of options. Can also use marked.setOptions.
callback	function	Called when markdownString has been parsed. Can be used as second argument if no options present.

Alternative using reference

// Create reference instance
var myMarked = require('marked');

// Set options
// `highlight` example uses `highlight.js`
myMarked.setOptions({
  renderer: new myMarked.Renderer(),
  highlight: function(code) {
    return require('highlight.js').highlightAuto(code).value;
  },
  pedantic: false,
  gfm: true,
  tables: true,
  breaks: false,
  sanitize: false,
  smartLists: true,
  smartypants: false,
  xhtml: false
});

// Compile
console.log(myMarked('I am using __markdown__.'));

Options

Member	Type	Notes
highlight	function	A function to highlight code blocks. See also: Asynchronous highlighting.
renderer	object	An object containing functions to render tokens to HTML. See extensibility for more details. Default: new Renderer().
pedantic	boolean	Conform to obscure parts of markdown.pl as much as possible. Don't fix original markdown bugs or behavior. Default: false.
gfm	boolean	Use approved GitHub Flavored Markdown (GFM) specification. Default: true.
tables	boolean	Use GFM Tables extension. Requires gfm be true. Default: true.
breaks	boolean	Use GFM hard and soft line breaks. Requires gfm be true. Default: false.
sanitize	boolean	Ignore HTML passed into markdownString (sanitize the input). Default: false.
smartlists	boolean	Use smarter list behavior than those found in markdown.pl. Default: true.
smartypants	boolean	Use "smart" typographic punctuation for things like quotes and dashes. Default: false.
xhtml	boolean	Self-close the tags for void elements (<br/>, <img/>, etc.) with a "/" as required by XHTML. Default: false.

Asynchronous highlighting

Unlike highlight.js the pygmentize.js library uses asynchronous highlighting. This example demonstrates that marked is agnostic when it comes to the highlighter you use.

myMarked.setOptions({
  highlight: function(code, lang, callback) {
    require('pygmentize-bundled') ({ lang: lang, format: 'html' }, code, function (err, result) {
      callback(err, result.toString());
    });
  }
});

console.log(myMarked(markdownString));

In both examples, code is a string representing the section of code to pass to the highlighter. In this example, lang is a string informing the highlighter what programming lnaguage to use for the code and callback is the function the asynchronous highlighter will call once complete.