[pedrovhb]

Nice! Seems very useful if you can drop in and have everything work.

Nitpicking a bit: it's not as much _rendering_ markdown as it's _syntax highlighting_ it. Another interesting approach there could be to use the CSS Custom Highlight API [0]. Then it wouldn't need the preview div, and perhaps it'd even be possible to have non-mono fonts and varying size text for headers.

[0] https://developer.mozilla.org/en-US/docs/Web/API/CSS_Custom_...

[pspeter3]

Can you use highlights on text area contents?

[lifthrasiir]

You can't mainly because <textarea> separately tracks its own selection, AFAIK.

[jagged-chisel]

The animated exploded demo definitely shows formatting differently from plain text (bold is bold, hyphens replaced with bullets.)

[franga2000]

Fair, but so do many syntax highlighters (at least bold, italic, titles...).

[4b11b4]

Ya that's true