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Bored of console.log?

K.V.Harish
Frontend developer and aspiring Fullstack developer from India. Loves to have ☕ any time of the day.
・1 min read

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.

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

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You can be as creative as you like

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You can also reuse styles using variables

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

Discussion (17)

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_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 ☕️

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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...

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kvharish profile image
K.V.Harish Author

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

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zoedreams profile image
☮️✝️☪️🕉☸️✡️☯️ • Edited

Nice!

  /**
   * shortcut helper link to a baked util.inspect
   * @param object
   * @returns {string}
   */
  static inspect(object) {
    console.log(
      util.inspect(object, {
        showHidden: true,
        depth: null,
        colors: true,
        showProxy: true,
        maxArrayLength: null,
        breakLength: 80
      })
    );
  }

<3 CHALK
cool

** works on front end dev console too **

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

Has just die. RIP.

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

Decorating with consoles 🥁

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kulpras profile image
Prasanna Kulkarni

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

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kvharish profile image
K.V.Harish Author

chalk is a good option to go for.

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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!

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kvharish profile image
K.V.Harish Author

👍

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puf17640 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!

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kvharish profile image
K.V.Harish Author • Edited

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

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artiep profile image
artie

That's cool

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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"

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kvharish profile image
K.V.Harish Author

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

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skhmt profile image
Mike S

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

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kvharish profile image
K.V.Harish Author

Cool 👍