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 Continued Fractions 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 Gray Code Decoder Gray Code Encoder 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 Alphabetic Numbers Apéry’s Constant Binary Lambda Calculus Connect Four Crossword CSS Colors (Inverse) CSS Grid Ellipse Perimeters Flags Floyd-Steinberg Dithering Hexagonal Spiral Highly Composite Numbers NFA Simulator Numbrix Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Rectangle Fill Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers Turtle Tutorial All Languages ><> ALGOL 68 ArkScript 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 APL 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 ><> ALGOL 68 ArkScript 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 APL 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 Continued Fractions 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 Gray Code Decoder Gray Code Encoder 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 Alphabetic Numbers Apéry’s Constant Binary Lambda Calculus Connect Four Crossword CSS Colors (Inverse) CSS Grid Ellipse Perimeters Flags Floyd-Steinberg Dithering Hexagonal Spiral Highly Composite Numbers NFA Simulator Numbrix Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Rectangle Fill Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers Turtle Tutorial # Golfer Points Bytes Time Submitted 310th malworthy 755 53 10ms 18 Oct 2023 310th jbdrucker 755 53 10ms 15 Feb 2025 310th smclaughlin-cf 755 53 11ms 20 Feb 2025 310th MadScience137 755 53 9ms 24 Sep 2025 310th gigaprofisi 🇺🇸 755 53 10ms 4 Nov 2025 326th rowboat1 741 54 10ms 16 Feb 2019 326th paudr 741 54 10ms 5 May 2019 326th VFDan 741 54 9ms 22 May 2019 326th cryosis7 741 54 12ms 20 Jun 2019 326th fabrice404 741 54 11ms 16 Jul 2020 326th itiievskyi 🇺🇦 741 54 13ms 5 Aug 2020 326th i-machine 741 54 13ms 28 Aug 2020 326th DizzyLeChuck 741 54 11ms 9 Sep 2020 326th eecb 741 54 10ms 24 Nov 2020 326th mrmena 🇦🇺 741 54 11ms 10 Jul 2021 326th mobibluman 741 54 10ms 27 Aug 2021 326th johanrosenson 741 54 12ms 8 Dec 2021 326th kevdah 741 54 11ms 8 May 2022 326th Ripick 741 54 11ms 13 Aug 2022 326th msbranicky 741 54 12ms 6 Jul 2023 326th JakeReadman 741 54 11ms 18 Jul 2024 326th hippopotam00sehead 🇨🇦 741 54 10ms 11 Sep 2024 343rd nastion 727 55 10ms 15 Jan 2019 343rd pg98 727 55 12ms 4 Sep 2019 343rd sage-fulcher 727 55 12ms 20 Apr 2020 343rd Pablo-No 727 55 12ms 15 Jul 2020 343rd elizj3 🇵🇱 727 55 9ms 29 Oct 2020 343rd aaronze 🇦🇺 727 55 13ms 26 Apr 2021 343rd lukalotl 727 55 11ms 24 May 2021 343rd berdzi 727 55 13ms 15 Mar 2022 343rd delgoodie 727 55 13ms 26 Aug 2022 343rd Sora1248 🇩🇪 727 55 10ms 19 Feb 2023 343rd logancammish 727 55 54ms 21 Mar 2023 343rd pandaninjas 727 55 10ms 9 Aug 2023 343rd yb1yb1 727 55 10ms 7 Oct 2024 356th 7JoeEdwards 714 56 11ms 1 Aug 2019 356th jmhowl 714 56 11ms 17 Dec 2019 356th RonnyPumaricra 714 56 11ms 25 Nov 2020 356th logancammish2 714 56 10ms 5 Feb 2021 356th kayahr 714 56 12ms 18 Jun 2021 356th RegularSalamander 714 56 10ms 29 Jan 2022 356th TheCod-r 🇦🇶 714 56 10ms 5 Mar 2022 356th GeorgeStechman 🇬🇧 714 56 10ms 23 May 2022 356th Protothor 714 56 12ms 14 Jun 2025 356th 52525rr 714 56 10ms 25 Feb 2026 366th jackkav 702 57 12ms 26 Dec 2018 366th paavohuhtala 702 57 11ms 4 Jan 2020 366th lowlighter 702 57 56ms 1 Nov 2020 366th taimanh229 702 57 9ms 31 Dec 2020 366th DaCuteRaccoon 702 57 14ms 21 Apr 2022 366th Smetalo 702 57 10ms 25 Aug 2022 366th StronkCheese 🇺🇸 702 57 9ms 27 Jan 2023 366th AZ9tumas 702 57 10ms 11 Feb 2023 366th 1231234md5 🇨🇳 702 57 11ms 11 Dec 2023 366th andrewl64 702 57 15ms 18 Jan 2024 366th nakatchi 702 57 11ms 26 Feb 2024 366th Europe2048 702 57 10ms 27 Sep 2024 366th TheAtrossian 702 57 10ms 5 Jan 2025 366th madeforlosers 702 57 10ms 20 Oct 2025 380th dcure73 690 58 11ms 7 Jun 2019 380th GitaMonster 690 58 14ms 31 Aug 2020 380th josh-h-90 690 58 12ms 2 Feb 2021 380th kozgera 690 58 10ms 6 Apr 2021 380th arrudagates 690 58 18ms 24 Jun 2021 380th p-vf 🇨🇭 690 58 11ms 13 Oct 2021 380th Great-Gamer 690 58 10ms 25 Feb 2022 380th mckymsh 690 58 10ms 27 Feb 2022 380th Ploverums 690 58 10ms 28 Sep 2022 380th genius257 690 58 10ms 3 Oct 2022 380th jorbDehmel 🇺🇸 690 58 13ms 27 Feb 2023 380th InspectorBoat 690 58 12ms 25 Oct 2023 392nd WIPocket 678 59 9ms 30 Dec 2018 392nd blucky36 678 59 13ms 27 Feb 2019 392nd wrauner 678 59 9ms 16 Aug 2019 392nd Matojeje 678 59 10ms 12 Dec 2019 392nd 8davidb8 678 59 13ms 10 Jun 2020 392nd KaeruCT 678 59 10ms 7 Oct 2020 392nd Secozzi 678 59 10ms 20 Oct 2020 392nd ffflorian 678 59 11ms 23 Nov 2020 392nd josephabbey 678 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