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@troelskn
troelskn / gist:1287893
Created October 14, 2011 18:24
Luhn's algorithm in php
<?php
function is_valid_luhn($number) {
settype($number, 'string');
$sumTable = array(
array(0,1,2,3,4,5,6,7,8,9),
array(0,2,4,6,8,1,3,5,7,9));
$sum = 0;
$flip = 0;
for ($i = strlen($number) - 1; $i >= 0; $i--) {
$sum += $sumTable[$flip++ & 0x1][$number[$i]];
@arv
arv / test-url.html
Created November 21, 2011 23:56
JavaScript + DOM implementation of http://dvcs.w3.org/hg/url/raw-file/tip/Overview.html
<!DOCTYPE html>
<script src="url.js"></script>
<script>
var url = new URL('http://www.example.com/a/b/c.html?p=q&r=s&p&p=t#hash');
for (var key in url) {
console.log(key, url[key]);
}
@dalethedeveloper
dalethedeveloper / gist:1503252
Created December 20, 2011 21:00
Mobile Device Detection via User Agent RegEx

#Mobile Device Detection via User Agent RegEx

Yes, it is nearly 2012 and this exercise has been done to death in every imaginable language. For my own purposes I needed to get the majority of non-desktop devices on to a trimmed down, mobile optimized version of a site. I decided to try and chase down an up-to-date RegEx of the simplest thing that could possibly work.

I arrived at my current solution after analyzing 12 months of traffic over 30+ US based entertainment properties (5.8M+ visitors) from Jan - Dec 2011.

The numbers solidified my thoughts on the irrelevancy of including browsers/OSes such as Nokia, Samsung, Maemo, Symbian, Ipaq, Avant, Zino, Bolt, Iris, etc. The brass tacks of the matter is that you certainly could support these obscure beasts, but are you really going to test your site on them? Heck, could you even find one?! Unless the folks that pay you are die hard Treo users my guess is "No".

Interestingly enough my research shows that /Mobile/ is more efficient than **/iP(

@paulirish
paulirish / rAF.js
Last active June 24, 2025 18:39
requestAnimationFrame polyfill
// http://paulirish.com/2011/requestanimationframe-for-smart-animating/
// http://my.opera.com/emoller/blog/2011/12/20/requestanimationframe-for-smart-er-animating
// requestAnimationFrame polyfill by Erik Möller. fixes from Paul Irish and Tino Zijdel
// MIT license
(function() {
var lastTime = 0;
var vendors = ['ms', 'moz', 'webkit', 'o'];
@jaydson
jaydson / gist:1780598
Created February 9, 2012 15:11
How to detect a click event on a cross domain iframe
var myConfObj = {
iframeMouseOver : false
}
window.addEventListener('blur',function(){
if(myConfObj.iframeMouseOver){
console.log('Wow! Iframe Click!');
}
});
document.getElementById('YOUR_CONTAINER_ID').addEventListener('mouseover',function(){
@froots
froots / image_replacer.js
Created March 13, 2012 17:03
Apple Image Replacer - prettified from http://images.apple.com/v/ipad/a/scripts/image_replacer.js
if (typeof (AC) === "undefined") {
AC = {}
}
AC.ImageReplacer = Class.create({
_defaultOptions: {
listenToSwapView: true,
filenameRegex: /(.*)(\.[a-z]{3}($|#.*|\?.*))/i,
filenameInsert: "_☃x",
ignoreCheck: /(^http:\/\/movies\.apple\.com\/|\/105\/|\/global\/elements\/quicktime\/|_(([2-9]|[1-9][0-9]+)x|nohires)(\.[a-z]{3})($|#.*|\?.*))/i,
attribute: "data-hires",
@johan
johan / jquery.nodoubletapzoom.js
Created March 15, 2012 22:59
A jQuery plugin to selectively disable the iOS double-tap-to-zoom action on specific page elements (and have that generate two click events instead).
// jQuery no-double-tap-zoom plugin
// Triple-licensed: Public Domain, MIT and WTFPL license - share and enjoy!
(function($) {
var IS_IOS = /iphone|ipad/i.test(navigator.userAgent);
$.fn.nodoubletapzoom = function() {
if (IS_IOS)
$(this).bind('touchstart', function preventZoom(e) {
var t2 = e.timeStamp
@JDMcKinstry
JDMcKinstry / jqExtCursor.js
Created March 26, 2012 15:41
jQuery Ext: $.cursor();
(function($) {
if (!$.cursor) {
$.extend({
cursor: function(elm, command, args) {
if (elm) {
if (typeof elm === "string") {
if ($(elm).length <= 0) { // elm is command string
switch(elm.toLowerCase()) {
case "clear":
document.body.style.cursor = "default";
@roboshoes
roboshoes / touchmouse.js
Created April 13, 2012 10:43
This snippet maps mouse events and touch events onto one single event. This makes it easier in the code since you have to listen to only one event regardles whether it's desktop or mobile.
(function() {
/* == GLOBAL DECLERATIONS == */
TouchMouseEvent = {
DOWN: "touchmousedown",
UP: "touchmouseup",
MOVE: "touchmousemove"
}
/* == EVENT LISTENERS == */
@davidwkeith
davidwkeith / index.html
Last active November 7, 2024 19:03
NOTE: This was a great hack in days gone by, but now both Apple and Google have improved their support for custom protocol handlers. Licensed under the WFTPL http://www.wtfpl.net/txt/copying/
<!doctype html>
<html>
<head>
<meta charset="utf-8">
<title>App Redirection</title>
</head>
<body>
<!--
NOTE: This was a great hack in days gone by, but now both Apple and Google have improved their support for custom
protocol handlers.