[Plugin request] HTML 3-tabs editor mode

[Palloxin]

Check for existing issues

• Completed

Describe the feature

a kind of jsfiddle mode reminishing jsfiddle.net, with three tabs defining HTML, JS, and CSS. If the file gets saved it would end up just as a single html file that merged the css and js sections inside the html file.

Some defined this mode as simplified or for kids practice. To me it is jusf just very comfortable for cases where you just have to test your javascript code.

If applicable, add mockups / screenshots to help present your vision of the feature

this is the supposed 3-tab html edit mode

vidf.mp4