Leap Years in JavaScript in bytes. Achievements Cheevos Holes Languages Medals Miscellaneous All Holes 12 Days of Christmas 24 Game 99 Bottles of Beer Abundant Numbers Abundant Numbers (Long) Arabic to Roman Arithmetic Numbers Arrows Ascending Primes ASCII Table Billiards brainfuck Calendar Card Number Validation Catalan Numbers Catalan’s Constant Christmas Trees Collatz CSS Colors Cubes Day of Week DFA Simulator Diamonds Divisors Emirp Numbers Emirp Numbers (Long) Emojify Evil Numbers Evil Numbers (Long) Factorial Factorisation Farey Sequence Fibonacci Fizz Buzz Foo Fizz Buzz Bar Forsyth–Edwards Notation Fractions Game of Life Gijswijt’s Sequence Happy Numbers Happy Numbers (Long) Hexdump Hilbert Curve Intersection Inventory Sequence ISBN Jacobi Symbol Kaprekar Numbers Kolakoski Constant Kolakoski Sequence Leap Years Levenshtein Distance Leyland Numbers ln 2 Look and Say Lucky Numbers Lucky Tickets Mahjong Mandelbrot Maze Medal Tally Minesweeper Morse Decoder Morse Encoder Multitap Input Musical Chords N Queens Niven Numbers Niven Numbers (Long) Number Spiral Odious Numbers Odious Numbers (Long) Ordinal Numbers PalindromemordnilaP Pangram Grep Partition Numbers Pascal’s Triangle Pernicious Numbers Pernicious Numbers (Long) Poker Polyominoes Prime Numbers Prime Numbers (Long) Proximity Grid QR Decoder Quine Recamán Repeating Decimals Reverse Polish Notation Reversi Rijndael S-box Rock-paper-scissors-Spock-lizard Roman to Arabic ROT13 Rule 110 Scrambled Sort Set Seven Segment SI Units Sierpiński Triangle Smith Numbers Spelling Numbers Star Wars GPT Star Wars Opening Crawl Sudoku Sudoku (Fill-in) Ten-pin Bowling Tic-tac-toe Time Distance Tongue-twisters Topological Sort Tower of Hanoi Transpose Sentence Trinomial Triangle United States Vampire Numbers Van Eck Sequence Zeckendorf Representation Zodiac Signs γ λ π τ φ √2 𝑒 Apéry’s Constant Binary Lambda Calculus Connect Four Continued Fractions Crossword CSS Colors (Inverse) CSS Grid Ellipse Perimeters Flags Floyd-Steinberg Dithering Gray Code Decoder Gray Code Encoder Hexagonal Spiral Highly Composite Numbers NFA Simulator Numbrix Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers Turtle Tutorial All Languages ><> Assembly AWK Bash BASIC Berry brainfuck C C# C++ Civet Clojure COBOL Coconut Common Lisp Crystal D Dart Elixir Erlang F# Factor Forth Fortran Gleam Go GolfScript Groovy Haskell Hexagony J Janet Java JavaScript jq Julia K Kotlin Lua Nim OCaml Pascal Perl PHP PowerShell Prolog Python R Raku Rockstar Ruby Rust Scheme sed SQL Swift Tcl TeX V VimL Wren Zig 05AB1E ALGOL 68 APL ArkScript Arturo Befunge BQN CJam CoffeeScript Egel Fennel Harbour Hare Haxe Hush Hy iogii Knight Lily Luau Odin Picat Qore Racket Rebol Rexx Scala Squirrel Stax Uiua Umka Vala Vyxal Bytes Chars Scoring Bytes Chars Language All ><> Assembly AWK Bash BASIC Berry brainfuck C C# C++ Civet Clojure COBOL Coconut Common Lisp Crystal D Dart Elixir Erlang F# Factor Forth Fortran Gleam Go GolfScript Groovy Haskell Hexagony J Janet Java JavaScript jq Julia K Kotlin Lua Nim OCaml Pascal Perl PHP PowerShell Prolog Python R Raku Rockstar Ruby Rust Scheme sed SQL Swift Tcl TeX V VimL Wren Zig Experimental Language 05AB1E ALGOL 68 APL ArkScript Arturo Befunge BQN CJam CoffeeScript Egel Fennel Harbour Hare Haxe Hush Hy iogii Knight Lily Luau Odin Picat Qore Racket Rebol Rexx Scala Squirrel Stax Uiua Umka Vala Vyxal Hole All 12 Days of Christmas 24 Game 99 Bottles of Beer Abundant Numbers Abundant Numbers (Long) Arabic to Roman Arithmetic Numbers Arrows Ascending Primes ASCII Table Billiards brainfuck Calendar Card Number Validation Catalan Numbers Catalan’s Constant Christmas Trees Collatz CSS Colors Cubes Day of Week DFA Simulator Diamonds Divisors Emirp Numbers Emirp Numbers (Long) Emojify Evil Numbers Evil Numbers (Long) Factorial Factorisation Farey Sequence Fibonacci Fizz Buzz Foo Fizz Buzz Bar Forsyth–Edwards Notation Fractions Game of Life Gijswijt’s Sequence Happy Numbers Happy Numbers (Long) Hexdump Hilbert Curve Intersection Inventory Sequence ISBN Jacobi Symbol Kaprekar Numbers Kolakoski Constant Kolakoski Sequence Leap Years Levenshtein Distance Leyland Numbers ln 2 Look and Say Lucky Numbers Lucky Tickets Mahjong Mandelbrot Maze Medal Tally Minesweeper Morse Decoder Morse Encoder Multitap Input Musical Chords N Queens Niven Numbers Niven Numbers (Long) Number Spiral Odious Numbers Odious Numbers (Long) Ordinal Numbers PalindromemordnilaP Pangram Grep Partition Numbers Pascal’s Triangle Pernicious Numbers Pernicious Numbers (Long) Poker Polyominoes Prime Numbers Prime Numbers (Long) Proximity Grid QR Decoder Quine Recamán Repeating Decimals Reverse Polish Notation Reversi Rijndael S-box Rock-paper-scissors-Spock-lizard Roman to Arabic ROT13 Rule 110 Scrambled Sort Set Seven Segment SI Units Sierpiński Triangle Smith Numbers Spelling Numbers Star Wars GPT Star Wars Opening Crawl Sudoku Sudoku (Fill-in) Ten-pin Bowling Tic-tac-toe Time Distance Tongue-twisters Topological Sort Tower of Hanoi Transpose Sentence Trinomial Triangle United States Vampire Numbers Van Eck Sequence Zeckendorf Representation Zodiac Signs γ λ π τ φ √2 𝑒 Experimental Hole Apéry’s Constant Binary Lambda Calculus Connect Four Continued Fractions Crossword CSS Colors (Inverse) CSS Grid Ellipse Perimeters Flags Floyd-Steinberg Dithering Gray Code Decoder Gray Code Encoder Hexagonal Spiral Highly Composite Numbers NFA Simulator Numbrix Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers Turtle Tutorial # Golfer Points Bytes Time Submitted 155th ForkKILLET 🇨🇳 911 45 9ms 18 Feb 2021 155th UBKorkut 911 45 9ms 10 Mar 2021 155th neihousaigaai 911 45 9ms 8 May 2021 155th SpareManiKatti 911 45 12ms 14 Oct 2021 155th danielb7390 911 45 9ms 9 Mar 2022 155th WebDevPT 🇵🇹 911 45 10ms 10 Mar 2022 155th CiucaRazvan 911 45 10ms 29 Jul 2022 155th SirFireball3521 911 45 10ms 1 Nov 2022 155th astdefu 911 45 8ms 10 Dec 2022 155th Betuaredead 911 45 10ms 4 Jan 2023 155th Mazn3k 911 45 9ms 15 Mar 2023 155th ejini6969 911 45 9ms 25 Mar 2023 155th raszpi 🇭🇺 911 45 9ms 2 Sep 2023 155th mulmul9 🇭🇺 911 45 9ms 7 Sep 2023 155th FruzsinaLenti 911 45 10ms 8 Sep 2023 155th junkondo-jp 911 45 8ms 6 May 2024 155th Mabeloid 🇳🇴 911 45 10ms 14 Oct 2024 155th shandriy 911 45 10ms 8 Nov 2024 155th Salutations45 911 45 9ms 12 Nov 2024 155th 823126 911 45 10ms 9 Dec 2024 155th Garklein 🇨🇦 911 45 11ms 6 Jan 2025 155th jake6192 911 45 9ms 17 May 2025 155th albanian-laundromat 911 45 9ms 1 Sep 2025 155th iczelia 🇩🇪 911 45 9ms 25 Sep 2025 185th oparisblue 891 46 9ms 24 Mar 2019 185th mrxz 🇳🇱 891 46 9ms 23 Jun 2019 185th alexkunin 891 46 12ms 3 Jul 2019 185th EFHIII 891 46 9ms 16 Aug 2020 185th yzhs 🇩🇪 891 46 11ms 20 Aug 2020 185th hyvyys 891 46 9ms 18 Sep 2020 185th bastienvoirin 🇫🇷 891 46 9ms 28 Nov 2020 185th Re-Adventures 🇮🇳 891 46 9ms 25 Mar 2021 185th PGPereira 891 46 9ms 27 Mar 2021 185th con-cs 891 46 10ms 18 Oct 2021 185th ledietz 891 46 10ms 16 Feb 2022 185th zakariamouhid 891 46 11ms 20 May 2023 185th adriweb 🇫🇷 891 46 21ms 28 Aug 2023 185th stellartux 891 46 10ms 27 Dec 2023 185th itserasmus 891 46 11ms 26 Jan 2024 185th HumanoidCPU 891 46 10ms 19 Feb 2024 185th rollershutter 891 46 11ms 4 Jul 2024 185th deancureton 891 46 10ms 29 Dec 2024 185th duckyluuk 🇳🇱 891 46 9ms 22 Jan 2025 185th acer-xq 891 46 10ms 4 Feb 2025 185th BalaM314 891 46 10ms 8 Feb 2025 185th Laellekoenig 891 46 9ms 22 Oct 2025 207th NatNgs 872 47 9ms 9 Jan 2020 207th Hydrophobefireman 872 47 9ms 16 Jul 2020 207th patterson-tom 872 47 9ms 9 Sep 2020 207th jake-freeman 872 47 10ms 10 Sep 2020 207th undefined-moe 872 47 10ms 23 Feb 2021 207th Hacksore 🇺🇸 872 47 9ms 18 Aug 2021 207th MathisBullinger 872 47 9ms 14 Nov 2021 207th BambooleanLogic 🇸🇪 872 47 9ms 26 Nov 2021 207th uttumuttu 🇫🇮 872 47 9ms 4 Jan 2022 207th Setvizan 872 47 10ms 14 Apr 2022 207th uiamn 872 47 10ms 9 Sep 2022 207th CatsAreFluffy 872 47 11ms 19 Feb 2023 207th amiralitaheri 872 47 8ms 23 Feb 2023 207th Andrey-Plotnikov 872 47 10ms 22 Aug 2023 207th MWI-polygolf 872 47 9ms 6 Dec 2023 207th steffan-polygolf 872 47 10ms 14 Feb 2024 207th alex742 872 47 11ms 18 Jul 2024 207th Sephirem98 872 47 12ms 27 Aug 2024 207th allistersascha 872 47 9ms 27 Sep 2024 226th mintypython 854 48 9ms 7 Dec 2018 226th oscarlvp 854 48 10ms 30 Apr 2019 226th Ranner198 854 48 14ms 14 Nov 2019 226th gnlow 🇰🇷 854 48 9ms 3 May 2020 226th tscherter 854 48 10ms 6 Dec 2020 226th stadamdoki 854 48 9ms 6 Apr 2021 226th devinwelch 854 48 9ms 7 Oct 2021 226th Michal-Miky-Jankovsky 854 48 10ms 20 Nov 2021 226th ThibWillFulll 854 48 10ms 5 May 2022 226th iliazeus 854 48 9ms 3 Sep 2022 226th FilipMyhren 854 48 10ms 23 Nov 2022 226th FrederikHutfless 🇩🇪 854 48 10ms 22 Dec 2022 226th Igyeom 🇰🇷 854 48 9ms 12 Jun 2023 226th Isaac-NTT 854 48 11ms 7 Jul 2023 226th AndFly33 854 48 9ms 7 Jul 2023 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