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 224th coreynash 854 48 10ms 27 Oct 2023 224th sparksis 🇨🇦 854 48 9ms 20 Nov 2023 224th TheLastZombie 854 48 9ms 15 May 2024 224th Jacob385 854 48 9ms 3 Sep 2024 224th eranws 854 48 9ms 23 Dec 2024 246th juntuu 837 49 9ms 24 Mar 2019 246th Mikaeel66 837 49 9ms 11 Nov 2019 246th jeffreymeng 837 49 10ms 24 Nov 2019 246th Kibble 837 49 9ms 11 Jul 2020 246th richard-oelze 🇩🇪 837 49 10ms 11 Jul 2020 246th masashimachida 837 49 10ms 29 Jul 2020 246th ArmaanAS 837 49 12ms 8 Mar 2021 246th RedstoneTim 837 49 9ms 26 Jun 2021 246th Foxinatel 837 49 9ms 22 Aug 2021 246th olivermrose 🇺🇸 837 49 11ms 23 Aug 2021 246th lukaskairys 837 49 9ms 25 Sep 2021 246th Giga-Bowser 837 49 11ms 5 Jan 2022 246th c0d3-4-F00d 🇩🇪 837 49 10ms 9 Feb 2022 246th TheRealOhead 🇺🇸 837 49 9ms 31 Mar 2023 246th Inbarw100 837 49 11ms 10 Jun 2023 246th Evankhell0 837 49 10ms 28 Jul 2023 246th NickTheEASDude 🇺🇸 837 49 9ms 18 Jan 2024 246th dijs 837 49 10ms 8 Mar 2024 246th xyangst 837 49 10ms 26 Sep 2024 246th ffelixm 837 49 9ms 30 May 2025 246th a6166231 🇨🇳 837 49 9ms 3 Jun 2025 246th JOrE20 🇺🇸 837 49 10ms 15 Nov 2025 246th johnkiernander 837 49 10ms 24 days ago 269th mikerees 820 50 9ms 1 Aug 2019 269th jakobwitte 820 50 11ms 5 Mar 2020 269th vgroen 820 50 10ms 31 May 2020 269th ibeucaly 820 50 10ms 22 Oct 2021 269th Romain-1 🇫🇷 820 50 10ms 29 Apr 2022 269th 7f-galaxii 820 50 11ms 7 Dec 2022 269th dgerblick 820 50 9ms 16 Jun 2023 269th deniz-blue 820 50 10ms 20 Oct 2023 269th SpiritAxolotl 🇺🇸 820 50 10ms 21 Mar 2024 269th codingisgreatbutiamnot 820 50 9ms 14 Aug 2024 269th henrygagnier 820 50 12ms 19 Nov 2024 269th alexsave 820 50 9ms 13 Oct 2025 281st ly0va 804 51 9ms 6 Jan 2019 281st tomh1012 804 51 9ms 5 Sep 2020 281st VegaQ8 804 51 10ms 26 Nov 2020 281st Seanharrs 804 51 9ms 15 Dec 2021 281st fourth-bit 804 51 10ms 14 Jan 2022 281st Ashikpaul 🇮🇳 804 51 11ms 24 Jul 2022 281st Bananapants22 804 51 10ms 20 Aug 2022 281st GreenBeansAgainstVeganism 804 51 10ms 14 Jan 2023 281st daniel-cardone 804 51 10ms 24 Aug 2023 281st Florian-Mt 804 51 9ms 29 Sep 2023 281st sulphemi 804 51 11ms 5 Mar 2024 281st dtbao20 🇻🇳 804 51 10ms 1 Oct 2024 281st Ralac07 🇦🇺 804 51 9ms 27 Oct 2025 294th Chegleyev 788 52 11ms 2 Feb 2020 294th abcxff 788 52 11ms 11 Apr 2021 294th mandm-pt 788 52 10ms 1 Jul 2021 294th Destrings2 🇨🇴 788 52 10ms 14 Jul 2021 294th stefangabos 🇷🇴 788 52 9ms 15 Jul 2021 294th aazuspan 788 52 11ms 3 May 2022 294th Ephellon 788 52 10ms 2 Dec 2022 294th ShiraJoseph 🇺🇸 788 52 10ms 12 Apr 2023 294th lewdev 🇺🇸 788 52 12ms 3 Jul 2024 294th UllmaDan 788 52 10ms 27 Aug 2024 304th McErer 774 53 10ms 11 Jan 2019 304th felixpackard 774 53 11ms 15 Mar 2020 304th dylanpyle 774 53 10ms 28 Apr 2020 304th dsntzn 🇸🇰 774 53 10ms 9 Aug 2020 304th SkimnerPhi 774 53 10ms 5 Dec 2020 304th pbarath 774 53 10ms 6 Apr 2021 304th 23rdIdiot 774 53 11ms 28 Aug 2021 304th liamstrilchuk 774 53 10ms 7 Sep 2021 304th AnnoyedArt1256 774 53 14ms 12 Jan 2022 304th JayantaNath 774 53 10ms 13 May 2022 304th blobotic 774 53 10ms 13 Jun 2023 304th malworthy 774 53 9ms 18 Oct 2023 304th jbdrucker 774 53 11ms 15 Feb 2025 304th smclaughlin-cf 774 53 9ms 20 Feb 2025 304th MadScience137 774 53 9ms 24 Sep 2025 304th gigaprofisi 🇺🇸 774 53 12ms 4 Nov 2025 320th rowboat1 759 54 10ms 16 Feb 2019 First Prev 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