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 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 Multitap Input 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 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 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 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 Multitap Input 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 153rd neihousaigaai 911 45 9ms 8 May 2021 153rd SpareManiKatti 911 45 9ms 14 Oct 2021 153rd danielb7390 911 45 10ms 9 Mar 2022 153rd WebDevPT 🇵🇹 911 45 10ms 10 Mar 2022 153rd CiucaRazvan 911 45 10ms 29 Jul 2022 153rd SirFireball3521 911 45 11ms 1 Nov 2022 153rd astdefu 911 45 11ms 10 Dec 2022 153rd Betuaredead 911 45 10ms 4 Jan 2023 153rd Mazn3k 911 45 9ms 15 Mar 2023 153rd ejini6969 911 45 9ms 25 Mar 2023 153rd raszpi 🇭🇺 911 45 9ms 2 Sep 2023 153rd mulmul9 🇭🇺 911 45 9ms 7 Sep 2023 153rd FruzsinaLenti 911 45 9ms 8 Sep 2023 153rd junkondo-jp 911 45 9ms 6 May 2024 153rd Mabeloid 🇳🇴 911 45 9ms 14 Oct 2024 153rd shandriy 911 45 11ms 8 Nov 2024 153rd Salutations45 911 45 11ms 12 Nov 2024 153rd 823126 911 45 10ms 9 Dec 2024 153rd Garklein 🇨🇦 911 45 10ms 6 Jan 2025 153rd jake6192 911 45 9ms 17 May 2025 153rd albanian-laundromat 911 45 11ms 1 Sep 2025 153rd iczelia 🇩🇪 911 45 9ms 25 Sep 2025 183rd oparisblue 891 46 10ms 24 Mar 2019 183rd mrxz 🇳🇱 891 46 10ms 23 Jun 2019 183rd alexkunin 891 46 12ms 3 Jul 2019 183rd EFHIII 891 46 9ms 16 Aug 2020 183rd yzhs 🇩🇪 891 46 10ms 20 Aug 2020 183rd hyvyys 891 46 10ms 18 Sep 2020 183rd bastienvoirin 🇫🇷 891 46 10ms 28 Nov 2020 183rd Re-Adventures 🇮🇳 891 46 10ms 25 Mar 2021 183rd PGPereira 891 46 9ms 27 Mar 2021 183rd con-cs 891 46 10ms 18 Oct 2021 183rd ledietz 891 46 9ms 16 Feb 2022 183rd zakariamouhid 891 46 11ms 20 May 2023 183rd adriweb 🇫🇷 891 46 11ms 28 Aug 2023 183rd stellartux 891 46 10ms 27 Dec 2023 183rd itserasmus 891 46 11ms 26 Jan 2024 183rd HumanoidCPU 891 46 10ms 19 Feb 2024 183rd rollershutter 891 46 10ms 4 Jul 2024 183rd deancureton 891 46 10ms 29 Dec 2024 183rd duckyluuk 🇳🇱 891 46 9ms 22 Jan 2025 183rd acer-xq 891 46 10ms 4 Feb 2025 183rd BalaM314 891 46 10ms 8 Feb 2025 183rd Laellekoenig 891 46 10ms 22 Oct 2025 205th NatNgs 872 47 9ms 9 Jan 2020 205th Hydrophobefireman 872 47 11ms 16 Jul 2020 205th patterson-tom 872 47 9ms 9 Sep 2020 205th jake-freeman 872 47 10ms 10 Sep 2020 205th undefined-moe 872 47 10ms 23 Feb 2021 205th Hacksore 🇺🇸 872 47 9ms 18 Aug 2021 205th MathisBullinger 872 47 9ms 14 Nov 2021 205th BambooleanLogic 🇸🇪 872 47 10ms 26 Nov 2021 205th uttumuttu 🇫🇮 872 47 12ms 4 Jan 2022 205th Setvizan 872 47 10ms 14 Apr 2022 205th uiamn 872 47 10ms 9 Sep 2022 205th CatsAreFluffy 872 47 9ms 19 Feb 2023 205th amiralitaheri 872 47 10ms 23 Feb 2023 205th Andrey-Plotnikov 872 47 11ms 22 Aug 2023 205th MWI-polygolf 872 47 9ms 6 Dec 2023 205th steffan-polygolf 872 47 10ms 14 Feb 2024 205th alex742 872 47 9ms 18 Jul 2024 205th Sephirem98 872 47 9ms 27 Aug 2024 205th allistersascha 872 47 12ms 27 Sep 2024 224th mintypython 854 48 10ms 7 Dec 2018 224th oscarlvp 854 48 9ms 30 Apr 2019 224th Ranner198 854 48 10ms 14 Nov 2019 224th gnlow 🇰🇷 854 48 9ms 3 May 2020 224th tscherter 854 48 9ms 6 Dec 2020 224th stadamdoki 854 48 9ms 6 Apr 2021 224th devinwelch 854 48 9ms 7 Oct 2021 224th Michal-Miky-Jankovsky 854 48 10ms 20 Nov 2021 224th ThibWillFulll 854 48 9ms 5 May 2022 224th iliazeus 854 48 11ms 3 Sep 2022 224th FilipMyhren 854 48 10ms 23 Nov 2022 224th FrederikHutfless 🇩🇪 854 48 10ms 22 Dec 2022 224th Igyeom 🇰🇷 854 48 10ms 12 Jun 2023 224th Isaac-NTT 854 48 10ms 7 Jul 2023 224th AndFly33 854 48 10ms 7 Jul 2023 224th AustinH-Ntt 854 48 9ms 7 Jul 2023 224th johnburton0517 854 48 9ms 7 Jul 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