Markdown parser in Javascript [closed]

Does anyone know a markdown parser in Javascript ?

PS : Actually, I do this with request to server to parse it, but a client side parser would be better :) .

Edit : If there is no one, I will use HTML (with WYSIWYG editor).

What Markdown parser does GitHub use?

The Implementation To ensure that the rendered Markdown in our website is fully compliant with the CommonMark spec, the new backend implementation for GFM parsing on GitHub is based on cmark , the reference implementation for CommonMark developed by John MacFarlane and many other fantastic contributors.

Showdown? -

The http://attacklab.net/showdown/ site is defunct.

Showdown is now available on git, here: https://github.com/coreyti/showdown