Javascript Console

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The Javascript console is the seventeenth building in Cookie Clicker, initially costing 71 quintillion cookies and produces 1.1 trillion CpS by creating cookies from Cookie Clicker's very code.


Icon Name Description ID
Plain javascript console.png F12 Have 1 javascript console. 433
Berrylium javascript console.png Variable success Have 50 javascript consoles. 434
Blueberrylium javascript console.png No comments Have 100 javascript consoles. 435
Chalcedhoney javascript console.png Up to code Have 150 javascript consoles. 436
Buttergold javascript console.png Works on my machine Have 200 javascript consoles. 437
Sugarmuck javascript console.png Technical debt Have 250 javascript consoles. 438
Jetmint javascript console.png Mind your language Have 300 javascript consoles. 439
Cherrysilver javascript console.png Inconsolable Have 350 javascript consoles. 440
Hazelrald javascript console.png Closure Have 400 javascript consoles. 441
Mooncandy javascript console.png Dude what if we're all living in a simulation like what if we're all just code on a computer somewhere Have 450 javascript consoles. 442
Astrofudge javascript console.png Taking the back streets Have 500 javascript consoles. 443
Alabascream javascript console.png Curly braces Have 550 javascript consoles.
"Or as the French call them, mustache boxes.
Go well with quotes."
Iridyum javascript console.png Duck typing Have 600 javascript consoles.
"Hello, this is a duck typing. Got any grapes?"
Glucosmium javascript console.png Get with the program Have 650 javascript consoles. 571
Glimmeringue javascript console.png Pebcakes Have 700 javascript consoles.
"Problem exists in my mouth!"
Inherited prototype.png Inherited prototype Make 10 octillion cookies just from javascript consoles. 444
A model of document object.png A model of document object Make 100 decillion cookies just from javascript consoles. 445
First-class citizen.png First-class citizen Make 1 tredecillion cookies just from javascript consoles. 446
Alexandria.png Alexandria Reach level 10 javascript consoles. 447


Icon Name Unlock condition Base price Description ID
Plain javascript console.png The JavaScript console for dummies Own 1 javascript console Money.png 710 quintillion Javascript consoles are twice as efficient.
"This should get you started. The first line reads: "To open the javascript console, press-"
...the rest of the book is soaked in chocolate milk. If only there was a way to look up this sort of information..."
Berrylium javascript console.png 64bit arrays Own 5 javascript consoles Money.png 3.55 sextillion Javascript consoles are twice as efficient.
"A long-form variable type to pack your cookies much more efficiently."
Blueberrylium javascript console.png Stack overflow Own 25 javascript consoles Money.png 35.5 sextillion Javascript consoles are twice as efficient.
"This is really bad! You probably forgot to close a loop somewhere and now your programs are going crazy! The rest of your engineers seem really excited about it somehow. How could a software mishap like a stack overflow possibly ever help anyone?"
Chalcedhoney javascript console.png Enterprise compiler Own 50 javascript consoles Money.png 3.55 septillion Javascript consoles are twice as efficient.
"This bespoke javascript compiler took your team years of development and billions in research, but it should let you execute (certain) functions (up to) 2% faster (in optimal circumstances)."
Buttergold javascript console.png Syntactic sugar Own 100 javascript consoles Money.png 355 septillion Javascript consoles are twice as efficient.
"Tastier code for tastier cookies."
Sugarmuck javascript console.png A nice cup of coffee Own 150 javascript consoles Money.png 35.5 octillion Javascript consoles are twice as efficient.
"All this nerd stuff has you exhausted. You make yourself a nice cup of coffee, brewed with roasted beans from some far-away island. You may have been working a bit too hard though - the cup of coffee starts talking to you, insisting that it is NOT javascript."
Jetmint javascript console.png Just-in-time baking Own 200 javascript consoles Money.png 35.5 nonillion Javascript consoles are twice as efficient.
"A new method of preparing cookies; they bake themselves right in front of the customers before eating, leaving your kitchens mess-free."
Cherrysilver javascript console.png cookies++ Own 250 javascript consoles Money.png 35.5 decillion Javascript consoles are twice as efficient.
"Your very own cookie-themed programming language, elegantly named after its most interesting ability - increasing the "cookies" variable by 1."
Hazelrald javascript console.png Software updates Own 300 javascript consoles Money.png 35.5 undecillion Javascript consoles are twice as efficient.
"This is grand news - someone's finally figured out the Wifi password, and your newfound internet connection seems to have triggered a whole lot of software updates! Your browsers, drivers and plugins all received a fresh coat of paint, and your javascript version has been updated to the latest ECMAScript specification. It's really too bad thousands had to die due to some deprecated function in your neurotoxin ventilation code, but I guess that's progress for you."
Mooncandy javascript console.png Game.Loop Own 350 javascript consoles Money.png 35.5 duodecillion Javascript consoles are twice as efficient.
"You're not quite sure what to make of this. What does it mean? What does it do? Who would leave something like that just laying around here? Try asking again in 1/30th of a second."
Astrofudge javascript console.png eval() Own 400 javascript consoles Money.png 355 tredecillion Javascript consoles are twice as efficient.
"It is said that this simple function holds the key to the universe, and that whosoever masters it may shape reality to their will.
Good thing you have no idea how it works. Makes for a neat plaque on your wall, though."
Alabascream javascript console.png Your biggest fans Own 450 javascript consoles Money.png 3.55 quindecillion Javascript consoles are twice as efficient.
"Let's face it, baking cookies isn't the most optimized thing there is. So you've purchased your biggest fans yet and stuck them next to your computers to keep things chill and in working order. Cool!"
Iridyum javascript console.png Hacker shades Own 500 javascript consoles Money.png 35.5 sexdecillion Javascript consoles are twice as efficient.
"I'm in."
Glucosmium javascript console.png PHP containment vats Own 550 javascript consoles Money.png 355 septendecillion Javascrpt consoles are twice as efficient.
"In essence, these are large server chambers meant to trap rogue PHP code, allowing it to execute far away from your javascript where it can do minimal harm."
Glimmeringue javascript console.png Simulation failsafes Own 600 javascript consoles Money.png 3.55 novemdecillion Javascript consoles are twice as efficient.
"Oh, for pete's sake, you bit into a cookie and it gave you a runtime error. You've been trapped in the old matrix gambit again! Time to shut everything down and prepare for extraction into what is hopefully the real layer of reality where learning kung-fu takes time and the biscuits don't throw memory overflow exceptions."

Other Upgrades

Icon Name Unlock condition Base price Description ID
Grandma icon.png Binary grandmas 15 javascript consoles and 1 grandma owned Money.png 3.55 sextillion Grandmas are twice as efficient. Javascript consoles gain +1% CpS per 15 grandmas.
"A digital grandma to transfer more cookies.
(See also : boolean grandmas, string grandmas, and not-a-number grandmas, also known as "NaNs".)"
Script grannies.png Script grannies 15 grandmas, 15 javascript consoles and "Synergies Vol. I" purchased Money.png 14.2 septillion Grandmas gain +5% CpS per javascript console.
Javascript consoles gain +0.1% CpS per grandma.
"Armies of energy drink-fueled grandmas ready to hack into the cyberspace for renegade e-cookies."
Tombola computing.png Tombola computing 75 chancemakers, 75 javascript consoles and "Synergies Vol. II" purchased Money.png 14.252 nonillion Chancemakers gain +5% CpS per javascript console.
Javascript consoles gain +0.1% CpS per chancemaker.
"Like quantum computing, but more fun.
(Your ticket reads XX XX XX XX, entitling you to [randomized message].)"
[note 1]
Peer review.png Peer review 75 javascript consoles, 75 You and "Synergies Vol. II" purchased Money.png 108 undecillion Javascript consoles gain +5% CpS per You.
You gain +0.1% CpS per javascript console.
"Code is only as good as the number of eyes on it, so imagine how flawlessly your systems could operate if you had endless copies of yourself triple-checking everything! Just make sure to teach them proper indenting etiquette."
Fortune javascript console.png Fortune #017 Random fortune from news ticker Money.png 5.522 quindecillion Javascript consoles are 7% more efficient and 7% cheaper.
"If things aren't working out for you, rewrite the rules."
Unshackled javascript console.png Unshackled javascript consoles
(heavenly upgrade)
"Unshackled fractal engine" purchased MoneyHC.png 6.155 quadrillion Tiered upgrades for Javascript consoles provide an extra +40% production.
Only works with unshackled upgrade tiers.
"Rewrite your reality."
  1. Tombola tickets:
    • [random] lines of javascript
      • Random calculation: Math.floor(Math.random()*5+2) = number between 2-6
    • one free use of Math.random()
    • one qubit, whatever that is
    • one half-eaten cookie
    • a brand new vacuum cleaner
    • most of one room-temperature cup of orange soda
    • one really good sandwich
    • one handful of pocket lint
    • someone's mostly clean hairpiece
    • a trip to a fancy restaurant
    • the knowledge of those numbers
    • a furtive glance at the news ticker
    • another ticket, half-price
    • all-you-can-eat moldy bread
    • one lifetime supply of oxygen
    • the color [random]
      • Random pick: red, orange, yellow, green, blue, purple, black, white, gray, brown, pink or teal
    • increased intellect for a limited time
    • an ancient runesword
    • the throne of a far-away country
    • the position of Mafia capo. Good luck
    • one free time-travel week-end
    • something beautiful
    • the deed to some oil well
    • one hamburger made out of the animal, plant, or person of your choice
    • the last surviving [random]
      • Random pick: dodo bird, thylacine, unicorn, dinosaur or neanderthal
    • a deep feeling of accomplishment
    • a fleeting tinge of entertainment
    • a vague sense of unease
    • deep existential dread
    • one extra week added to your lifespan
    • breathe manually
    • blink right here and now
    • one meeting with any famous person, living or dead, in your next dream
    • one very nice dream
    • a wacky sound effect
    • 45 seconds of moral flexibility
    • hundreds and thousands, also known as "sprinkles"
    • one circle, triangle, square or other simple geometric shape, of average dimensions
    • just this extra bit of randomness
    • the extra push you needed to turn your life around
    • a good fright
    • one secret superpower
    • a better luck next time
    • an irrational phobia of tombola tickets
    • one whole spider
    • an increased sense of self-worth and determination
    • inner peace
    • one double-XP week-end in the MMORPG of your choice
    • a little piece of the universe, represented by the trillions of atoms that make up this very ticket
    • food poisoning
    • the Moon! Well, conceptually
    • a new car, baby
    • a new catchphrase
    • an intrusive thought of your choice
    • - man, it just cuts off there
    • the director spot for the next big hit movie
    • really good-looking calves
    • one genuine pirate golden doubloon
    • "treasure and riches", or something
    • one boat, sunken
    • baby shoes, never worn
    • direct lineage to some King or Queen
    • innate knowledge of a dead language you'll never encounter
    • the melody of a song you don't know the words to
    • white noise
    • mild physical impairment
    • a new pair of lips
    • things, and such
    • one popular expression bearing your name
    • one typo
    • one get-out-of-jail-free card
    • the rest of your life... for now
    • one polite huff
    • a condescending stare
    • one cursed monkey paw
    • true love, probably
    • an interesting factoid about the animal, country, TV show or celebrity of your choice
    • a pop culture reference
    • minutes of fun
    • the etymology of the word "tombola" - it's Italian for "a tumble"
    • nothing. You lost, sorry



  • Starting from this building and onwards, there is a trend of the base building costs skyrocketing. Javascript consoles are 229 times as expensive as fractal engines.
  • The Javascript console model has the Japanese katakana characters "クッキークリッカー ジャバスクリプト" (Kukkii Kurikkaa Jabasukuriputo) which translates to "Cookie Clicker JavaScript".
    • Before version 2.028, the Javascript console model was miswritten as "クツキークリツカー ジャバスクリプト" (Kutsukii Kuritsukaa Jabasukuriputo).
    • The model is split into two different building models that appear separately: one for "Cookie Clicker" and one for "JavaScript".
  • This is the second building to have a completely different store icon compared to its appearance in the buildings overview, after the time machine.
  • Unlike all other buildings, the javascript console's grandma appearance is dependent on the Script grannies synergy upgrade, rather than the Binary grandmas type upgrade.


  • The achievement "F12" refers to the F12 key opening the browser console.
  • The achievement "No comments" is a reference to comments that are written in code to help explain what certain lines of code are doing.
  • The achievement "Taking the back streets" is a reference to the song "All Star" by Smash Mouth.
  • The flavor text for the achievement "Curly braces" is a reference to Cave Story.
  • The achievement "Duck typing" and its flavor text "got any grapes?" are references to duck typing and "The Duck Song", respectively.
  • The achievement "Alexandria" is a reference to the Library of Alexandria and coding libraries.
  • The achievement "Pebcakes" is a reference to the derogatory tech support term "PEBCAK".
  • The upgrade "The JavaScript console for dummies" is a reference to the series of informative books of a similar name.
  • The upgrade "Stack overflow" is a reference to a stack overflow, or to the Q&A site for programmers.
  • The flavor text for the upgrade "A nice cup of coffee" is a reference to the fact that java is a name for coffee and that Java is a programming language that is easily confused with JavaScript.
  • The upgrade "Just-in-time baking" is a reference to Just-in-time compilation.
  • The upgrade "cookies++" is a reference to the C++ programming language and the fact that the "++" operator increases a variable by one.
  • The flavor text for the upgrade "Software updates" ("deprecated function in your neurotoxin ventilation code") is a reference to the Portal series.
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Factory new.png
Wizard Tower
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Alchemy Lab
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Time Machine
Antimatter Condenser
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Fractal Engine
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Javascript Console
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Cortex Baker