DEV Community

K.V.Harish
K.V.Harish

Posted on

Bored of console.log?

A useful and fun thing about console.log is that you can add CSS styles to it. You can do it with the help of %c variable which gets replaced with the respective styles passed in as a parameter.

Alt Text

You can revert the style previously applied using another %c with an empty parameter passed in order.

Alt Text

You can be as creative as you like

Alt Text

You can also reuse styles using variables

Alt Text

This feature can really come in handy when you want to differentiate the console logs added at different parts of the code.

Top comments (16)

Collapse
 
teclado profile image
Teclado • Edited
console.log('###################');

Has just die. RIP.

Collapse
 
adam_cyclones profile image
Adam Crockett 🌀
console.table()
console.chairs()

Decorating with consoles 🥁

Collapse
 
kulpras profile image
Prasanna Kulkarni

npmjs.com/package/chalk
this one I used in many node js projects.

Collapse
 
kvharish profile image
K.V.Harish

chalk is a good option to go for.

Collapse
 
_alexblokh profile image
Alex Blokh

Remember myself reading a blogpost about how credit cards of millions of people were stolen using an npm package for styling console output. Good old days ☕️

Collapse
 
ajkachnic profile image
Andrew • Edited

I remember reading this as well... Do you know the title? I'd like to read it again

EDIT: nvm i found it medium.com/hackernoon/im-harvestin...

Collapse
 
kvharish profile image
K.V.Harish

That's 😱. Thanks Alex and Andrew for sharing. No better way to emphasise on choosing dependencies smartly and carefully.

Collapse
 
forkinspace profile image
Zaza Siv.

Yeah that's cool and all but I don't think anyone would ever choose to debug this way just because they might be "bored of console.log"

Collapse
 
kvharish profile image
K.V.Harish

Ha Ha please do not take the title of this post literally. 😃

Collapse
 
skhmt profile image
Mike

Wrote this for fun a while ago that uses one tagged template to color both node.js terminals and frontend dev console text - github.com/Skhmt/ttlog

Collapse
 
kvharish profile image
K.V.Harish

Cool 👍

Collapse
 
merichard123 profile image
Richard

This is awesome debugging my JavaScript will be super fun now. It may take a lot longer but it's worth it!

Collapse
 
kvharish profile image
K.V.Harish

👍

Collapse
 
artiep profile image
artie

That's cool

Collapse
 
pujux profile image
Julian Pufler

Wow! I didn't know that!
I think this is a webkit only thing though, as it surely does not work in terminal. Still an awesome trick!

Collapse
 
kvharish profile image
K.V.Harish • Edited

Yes seems like it. Like others suggested you can try Chalk or any other alternatives available.