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@DiegoSalazar
DiegoSalazar / validate_credit_card.js
Last active April 24, 2024 12:51
Luhn algorithm in Javascript. Check valid credit card numbers
// Takes a credit card string value and returns true on valid number
function valid_credit_card(value) {
// Accept only digits, dashes or spaces
if (/[^0-9-\s]+/.test(value)) return false;
// The Luhn Algorithm. It's so pretty.
let nCheck = 0, bEven = false;
value = value.replace(/\D/g, "");
for (var n = value.length - 1; n >= 0; n--) {
@mshafrir
mshafrir / states_hash.json
Created May 9, 2012 17:05
US states in JSON form
{
"AL": "Alabama",
"AK": "Alaska",
"AS": "American Samoa",
"AZ": "Arizona",
"AR": "Arkansas",
"CA": "California",
"CO": "Colorado",
"CT": "Connecticut",
"DE": "Delaware",
@chrislkeller
chrislkeller / import_json_appsscript.js
Last active March 25, 2024 19:45
Adds what amounts to an =ImportJSON() function to a Google spreadsheet... To use go to Tools --> Script Editor and add the script and save.
/**
* Retrieves all the rows in the active spreadsheet that contain data and logs the
* values for each row.
* For more information on using the Spreadsheet API, see
* https://developers.google.com/apps-script/service_spreadsheet
*/
function readRows() {
var sheet = SpreadsheetApp.getActiveSheet();
var rows = sheet.getDataRange();
var numRows = rows.getNumRows();
@chantastic
chantastic / on-jsx.markdown
Last active March 20, 2024 01:03
JSX, a year in

Hi Nicholas,

I saw you tweet about JSX yesterday. It seemed like the discussion devolved pretty quickly but I wanted to share our experience over the last year. I understand your concerns. I've made similar remarks about JSX. When we started using it Planning Center, I led the charge to write React without it. I don't imagine I'd have much to say that you haven't considered but, if it's helpful, here's a pattern that changed my opinion:

The idea that "React is the V in MVC" is disingenuous. It's a good pitch but, for many of us, it feels like in invitation to repeat our history of coupled views. In practice, React is the V and the C. Dan Abramov describes the division as Smart and Dumb Components. At our office, we call them stateless and container components (view-controllers if we're Flux). The idea is pretty simple: components can't

@pmeenan
pmeenan / user-timing-rum.js
Last active January 18, 2024 23:46
Support routine for adding W3C user timing events to a site. Includes some basic polyfill support for browsers that don't support user timing or navigation timing (though the start time for non-navigation timing support could be improved with IE < 9 to use IE's custom start event).
// Support routines for automatically reporting user timing for common analytics platforms
// Currently supports Google Analytics, Boomerang and SOASTA mPulse
// In the case of boomerang, you will need to map the event names you want reported
// to timer names (for mPulse these need to be custom0, custom1, etc) using a global variable:
// rumMapping = {'aft': 'custom0'};
(function() {
var wtt = function(n, t, b) {
t = Math.round(t);
if (t >= 0 && t < 3600000) {
// Google Analytics
@jeffcogswell
jeffcogswell / q_example.js
Last active August 12, 2022 01:22
Here's another chaining example on using q.js. This doesn't have any error handling, as I just want to demonstrate the chaining concept. Please read the comments carefully, as I start out with a non-q example, to show the order of flow. Please post comments if there's anything that isn't clear and I'll try to revise it as needed.
// Q sample by Jeff Cogswell
/*===========
We want to call these three functions in sequence, one after the other:
First we want to call one, which initiates an ajax call. Once that
ajax call is complete, we want to call two. Once two's ajax call is
complete, we want to call three.
BUT, we don't want to just call our three functions in sequence, as this quick
@robertknight
robertknight / Build.md
Last active July 8, 2022 01:32
Minimal Webpack DllPlugin example

Compile with:

webpack --config vendor.webpack.config.js
webpack --config app.webpack.config.js

Use with the following index.html

@afeld
afeld / gist:4952991
Last active February 8, 2022 03:13
good APIs for mashups

This list has been superseded by Public APIs. Check there for APIs with Auth: No, HTTPS and CORS Yes.


List of data APIs that require no server-side auth or private credentials, and are thus good for small browser-only JS projects.

@victorb
victorb / app.js
Created September 24, 2013 16:37
Easy AngularJS Directive for Google Places Autocomplete
var myApp = angular.module('myApp', []);
myApp.directive('googleplace', function() {
return {
require: 'ngModel',
link: function(scope, element, attrs, model) {
var options = {
types: [],
componentRestrictions: {}
};
@steinbring
steinbring / StoreFormValuesInLocalStorage-Part1.html
Created November 18, 2012 01:35
How to use localStorage and sessionStorage to make form values persistant
<!DOCTYPE html>
<html lang="en-US">
<head>
<meta charset="windows-1252">
<title>Keep webform data persistent</title>
<!-- jQuery CDN -->
<script src="http://code.jquery.com/jquery-latest.js"></script>
<style type="text/css">
/*Float the form labels to the left and allow them 40% of the width of the form*/