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Darren Semotiuk DarrenSem

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@DarrenSem
DarrenSem / download.js
Last active November 18, 2022 00:09
download.js: SAVE data TO file (aka 'export/download') plus openInNewWindow(data, type = "octet-stream")
/////// download.js: SAVE data TO file (aka 'export/download')...
//// const download_MIN=(d,f=`file-${+new Date}.txt`,t="octet-stream")=>{const h=URL.createObjectURL(new Blob([d].slice(void 0===d),{type:t})),s=null!==f;return Object.assign(document.createElement("a"),{href:h,[s&&"download"]:f,target:"_blank"}).click(),s&&URL.revokeObjectURL(h)};
const download = (
data
, filename = `file-${+new Date}.txt` // null means download: filename OMITTED = DISPLAY data in browser
, type = "octet-stream" // default is ~ "application/octet-binary"
) => {
const href = URL.createObjectURL(new Blob( // https://developer.mozilla.org/en-US/docs/Web/API/Blob/Blob
[data].slice(data === undefined)
@ctodmia
ctodmia / stringify.js
Last active November 18, 2022 15:30
Reimplementation of JSON.stringify
//The following code is a reimplementation of the native Javascript method JSON.stringify
//keep reading for the though process that lead to the solution
var stringify = function(obj) {
//checks if the input obj is a function statement or undefined
if(typeof obj === 'undefined' || typeof obj === 'function') {
return undefined;
}
//checks if the input obj is a string
if(typeof obj === 'string') {
@domenic
domenic / generate-urltestdata.js
Created December 30, 2022 09:53
urltestdata.json generator using jsdom/whatwg-url
"use strict";
const { URL } = require(".");
const inputs = [
"https://\u0000y",
"https://x/\u0000y",
"https://x/?\u0000y",
"https://x/?#\u0000y"
];
@DarrenSem
DarrenSem / contentsInNewWindow.js
Last active October 15, 2023 17:28
OpenInNewWindow(data, type) - F5-REFRESHABLE! - auto-UTF8 if type==="text"! - also ContentsInNewWindow(contents = '' or [], Title, type, delimToJoinArray = "\n\n")
// contentsInNewWindow.js - F5-REFRESHABLE! - with TITLE! - (contents = '' or [], title, type = 'octet-stream', array-joining-delim = '\n\n')
// const contentsInNewWindow=(c=[],T,t="octet-stream",d="\n\n")=>{const w=open(URL.createObjectURL(new Blob([[c].flat(1/0).join(d)],{type:"text"===t?t+"/plain;charset=utf-8":t})),"_blank");return w&&!w.closed&&(w.onload=()=>w.document.title=T),w};
const contentsInNewWindow = (contents = [], title, type = ["text", "octet-stream"][1], delim = "\n\n") => {
const win = open(
URL.createObjectURL(
new Blob([
[contents].flat(1/0).join(delim)
], {
// auto-UTF8 if type === 'text', to easily ensure visible emojis etc.
@DarrenSem
DarrenSem / randomWithSeed.js
Last active December 21, 2023 18:07
randomWithSeed.js - use rnd() after rnd = createRandomWithSeed( seed [0+] = Date.now() ) - Math.random is less than 2x faster than this 'good enough' SEED-able version
// randomWithSeed.js - use rnd() after rnd = createRandomWithSeed( seed [0+] = Date.now() ) - Math.random is less than 2x faster than this 'good enough' SEED-able version
let createRandomWithSeed = seed => {
seed = Math.abs(isNaN(seed) ? Date.now() : seed);
return () => {
seed = (seed * 9301 + 49297) % 233280;
return seed / 233280;
};
};
// R=s=>(s=Math.abs(isNaN(s)?Date.now():s),_=>(s=(9301*s+49297)%233280,s/233280));
@DarrenSem
DarrenSem / chatgpt-lite.js.cs.md
Last active April 25, 2024 19:59
chatgpt-lite.js equivalent in Csharp is... not nearly as minimal (ChatGPT results, MarkDown) (1st comment = final C# version, 2nd comment = Java version)

SYSTEM:

You are an expert at JavaScript and C#

. You must format indents using 2 spaces, and you must wrap strings using doublequotes " instead of '.

Let's think step by step.

@DarrenSem
DarrenSem / dtString.js
Created November 6, 2022 20:02
dtString.js (dateArg, includeTime, defaultDate, defaultReturnValue) '1-2-2022 1:00' returns '02Jan2022 100am' or '02Jan2022'
// dtString.js (dateArg, includeTime, defaultDate, defaultReturnValue) '1-2-2022 1:00' returns '02Jan2022 100am' or '02Jan2022'
const assert=(...a)=>!a.reduce((b,c,d,e,f)=>(f=("function"==typeof c?!c():!c)&&[2>a.length?c:`<arg #${d+1}> ${a.map((a,b)=>`#${b+1} = [ ${a} ]`).join(" , ")}`],f&&console.assert(0,...b[b.push(f)-1]),b),a.length?[]:[a]).length;
const assertMessage = (test, ...messageAndSubstitutions) => assert(test) || console.error(...messageAndSubstitutions) || false;
console.clear();
// 183 chars: const dtString=(a,b,c,e,f=new Date(a),[,,,,g,h,,i]=(f=+f?f:new Date(c)).toLocaleString().toLowerCase().split(/\W/),[,j,k,d]=f.toString().split(" "))=>isNaN(f)?e:`${k}${j}${d}${b?` ${g}${h}${i}`:""}`
const dtString = (dateArg, includeTime, defaultDate, defaultReturnValue, z = new Date(dateArg), [, , , , h, n, , ampm] = (z = +z ? z : new Date(defaultDate)).toLocaleString().toLowerCase().split(/\W/), [, m, d, y] = z.toString().split(" ")) => isNaN(z) ? defaultReturnValue : `${d}${m}${y}${includeTime ? `
@DarrenSem
DarrenSem / VueJS-ChatGPT-Playground.html
Last active June 21, 2024 21:31
VueJS-ChatGPT-Playground (minimal, proof of concept direct API fetch) - Pinia for state management, CTRL+ENTER = send, CTRL + UP/DOWN = prompt history
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>ChatGPT Playground (starting up)</title>
<style>
.byline {
font-family: Verdana;
font-size: 80%;
@anuraghazra
anuraghazra / minimal-templating-engine.ts
Last active August 2, 2024 09:48
Minimal Templating Engine In Javascript
// magic!
function dom<Props extends Record<string, unknown>>(
str: TemplateStringsArray,
...args: string[] | ((props: Props) => string)[]
) {
const interleaved = args.flatMap((arg, index) => {
return [arg, str[index + 1]];
});
return (props?: Props) =>
@LeCoupa
LeCoupa / date-object-cheatsheet.js
Last active August 24, 2024 06:33
JavaScript Date Object CheatSheet --> https://github.com/LeCoupa/awesome-cheatsheets
// Date Object CheatSheet
// The Date object is used to work with dates and times.
// More: http://www.w3schools.com/jsref/jsref_obj_date.asp
// 1. Instantiating a Date.
var date = new Date();
var date = new Date(milliseconds);