A tweet-sized, fork-to-play, community-curated collection of JavaScript.
See the 140byt.es site for a showcase of entries (built itself using 140-byte entries!), and follow @140bytes on Twitter.
To learn about byte-saving hacks for your own code, or to contribute what you've learned, head to the wiki.
140byt.es is brought to you by Jed Schmidt, with help from Alex Kloss. It was inspired by work from Thomas Fuchs and Dustin Diaz.
| function( | |
| d, // array that represents the cards | |
| // initialized as [new Array(52)] | |
| // exploites truthiness | |
| l, // object representing the amount of cards left | |
| // an object is used so that the integer can be passed by refference | |
| r // used to store the random number | |
| ){ | |
| if(0>--l.i) // decrement the amount of cards left | |
| // and check if we can draw a new card | |
| return'-'; // return a dash when deck is empty | |
| while(!!d[r=new Date%52]); // loop as long as the card at the new random position is already drawn | |
| d[r]=1; // set the new card as drawn | |
| return ('23456789TJQKA')[0|r/4] + // the number 'integer divided' by four represents the rank | |
| ('♠♣♥♦')[r%4] // the number 'modulo' four represents the suit | |
| } |
| function(d,l,r){if(0>--l.i)return'-';for(;!!d[r=new Date%52];d[r]=1);return('23456789TJQKA')[0|r/4]+('♠♣♥♦')[r%4]} |
| DO WHAT THE FUCK YOU WANT TO PUBLIC LICENSE | |
| Version 2, December 2004 | |
| Copyright (C) 2011 YOUR_NAME_HERE <YOUR_URL_HERE> | |
| Everyone is permitted to copy and distribute verbatim or modified | |
| copies of this license document, and changing it is allowed as long | |
| as the name is changed. | |
| DO WHAT THE FUCK YOU WANT TO PUBLIC LICENSE | |
| TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION | |
| 0. You just DO WHAT THE FUCK YOU WANT TO. |
| { | |
| "name": "deckOfCardsDrawer", | |
| "description": "Draws a random card from a standard deck of 52 cards without putting back the card. Checks for empty deck.", | |
| "keywords": [ | |
| "card", | |
| "deck", | |
| "card games" | |
| ] | |
| } |
| <!DOCTYPE html> | |
| <title>Card drawer</title> | |
| <div id="debug"></div> | |
| <div>Card: <b id="ret"></b></div> | |
| <script> | |
| var deck, left; | |
| reset(); | |
| function reset(){ | |
| deck = new Array(52); | |
| left = {"i":52}; | |
| document.getElementById( 'ret' ).innerHTML = '' | |
| } | |
| var myFunction = function(d,l,r){ | |
| if(0>--l.i)return'-'; | |
| while(!!d[r=new Date%52]); | |
| d[r]=1; | |
| return('23456789TJQKA')[0|r/4]+('♠♣♥♦')[r%4]} | |
| </script> | |
| <input type="button" value="Draw card" onclick="document.getElementById( 'ret' ).innerHTML = myFunction(deck, left)" /> | |
| <input type="button" value="Reset" onclick="reset();" /> |