JPaulDuncan’s gists

JPaulDuncan / InteractiveStars.tsx

Created September 1, 2025 14:14

Express+Typescript: Accessible, reusable 1–5 interactive star rating component

	import React, { useMemo, useRef, useState } from "react";
	import { Star } from "lucide-react";

	export type InteractiveStarsProps = {
	/** Current rating (0–max). Controlled. */
	value: number;
	/** Called when the user selects a rating. */
	onChange: (val: number) => void \| Promise<void>;
	/** Number of stars to render (default 5). */
	max?: number;

JPaulDuncan / broadcast.service.ts

Created October 21, 2021 16:06

Using BroadcastChannel - Typescript

	import {EventEmitter, Injectable, OnDestroy} from "@angular/core";

	/**
	* Interface to ensure broadcast message uniformity.
	*/
	export interface IBroadcastMessage {
	source: string;
	target: string;
	action: string;
	payload: any;

JPaulDuncan / digitOnly.directive.ts

Created September 8, 2021 17:16

Angular Directive: Digits Only

	import { Directive, ElementRef, HostListener, Input } from "@angular/core";

	/**
	* Ensures the associated element only allows digits to be entered.
	* Allows for editing and in-element navigation.
	*
	* Usage: digitOnly allowSpaces="false"
	*/
	@Directive({
	selector: "[digitOnly]"

JPaulDuncan / MailImportService.cs

Created December 12, 2017 17:48

Microsoft Exchange Web Services (EWS) Connecting, filtering, attachment downloading, and archiving.

	using log4net;
	using Microsoft.Exchange.WebServices.Data;
	using System;
	using System.Configuration;
	using System.IO;
	using System.Linq;
	using System.Net;
	using System.ServiceProcess;
	using System.Timers;

JPaulDuncan / jquery.ajax.working.js

Last active February 8, 2017 21:04

Notify a user that an ajax action is happening and prevent clicks. JQuery


	/*
	* Throws up a notification to tell the end-user a
	* server call (ajax) is happening and prevents them
	* from clicking elsewhere on the screen while it's
	* working.
	* USAGE: $.ajaxWorking();
	*/
	; (function ($) {
	$.extend({

JPaulDuncan / validation-vin.js

Last active March 2, 2023 21:37

VIN Validation (Vehicle Identification Number)

	function validateVin(vin) {
	if (vin == "11111111111111111") { return false; }
	if (!vin.match("^([0-9a-hj-npr-zA-HJ-NPR-Z]{10,17})+$")) { return false;}
	var letters = [{ k: "A", v: 1 }, { k: "B", v: 2 }, { k: "C", v: 3 },
	{ k: "D", v: 4 }, { k: "E", v: 5 }, { k: "F", v: 6 }, { k: "G", v: 7 },
	{ k: "H", v: 8 }, { k: "J", v: 1 }, { k: "K", v: 2 }, { k: "L", v: 3 },
	{ k: "M", v: 4 }, { k: "N", v: 5 }, { k: "P", v: 7 }, { k: "R", v: 9 },
	{ k: "S", v: 2 }, { k: "T", v: 3 }, { k: "U", v: 4 }, { k: "V", v: 5 },
	{ k: "W", v: 6 }, { k: "X", v: 7 }, { k: "Y", v: 8 }, { k: "Z", v: 9 }];
	var weights = [8, 7, 6, 5, 4, 3, 2, 10, 0, 9, 8, 7, 6, 5, 4, 3, 2];

JPaulDuncan / infobox.js

Created February 3, 2016 14:56 — forked from wbotelhos/infobox.js

InfoBox

	/**
	* @name InfoBox
	* @version 1.1.11 [January 9, 2012]
	* @author Gary Little (inspired by proof-of-concept code from Pamela Fox of Google)
	* @copyright Copyright 2010 Gary Little [gary at luxcentral.com]
	* @fileoverview InfoBox extends the Google Maps JavaScript API V3 <tt>OverlayView</tt> class.
	* <p>
	* An InfoBox behaves like a <tt>google.maps.InfoWindow</tt>, but it supports several
	* additional properties for advanced styling. An InfoBox can also be used as a map label.
	* <p>

JPaulDuncan / EmptyGUIDConstraint

Last active August 29, 2015 14:21

Create a SQL Server Constraint to check for Empty UniqueIdentifier (GUID)

	ALTER TABLE MyTable WITH CHECK ADD CONSTRAINT [CK_MyTable_MyId_NotEmpty] CHECK (MyId<>CAST(0x0 AS UNIQUEIDENTIFIER))
	GO

JPaulDuncan / PrettyRelativeDateString

Last active December 14, 2015 16:39

Generates a date description relative the current date.

	public static string ToRelativeDateString(this DateTime date)
	{
	return DateTimeExtensions.GetRelativeDateValue(date, DateTime.Now);
	}
	public static string ToRelativeDateStringUtc(this DateTime date)
	{
	return DateTimeExtensions.GetRelativeDateValue(date, DateTime.UtcNow);
	}
	private static string GetRelativeDateValue(DateTime date, DateTime comparedTo)
	{

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