Jezternz

const csvStringToArray = strData =>
{
    const objPattern = new RegExp(("(\\,|\\r?\\n|\\r|^)(?:\"([^\"]*(?:\"\"[^\"]*)*)\"|([^\\,\\r\\n]*))"),"gi");
    let arrMatches = null, arrData = [[]];
    while (arrMatches = objPattern.exec(strData)){
        if (arrMatches[1].length && arrMatches[1] !== ",")arrData.push([]);
        arrData[arrData.length - 1].push(arrMatches[2] ? 
            arrMatches[2].replace(new RegExp( "\"\"", "g" ), "\"") :
            arrMatches[3]);
    }

pavle-goloskokovic

webAudioTouchUnlock(context).then(function (unlocked)
{
    if(unlocked)
    {
        // AudioContext was unlocked from an explicit user action,
        // sound should start playing now
    }
    else
    {
        // There was no need for unlocking, devices other than iOS

pavle-goloskokovic

function webAudioTouchUnlock (context)
{
    return new Promise(function (resolve, reject)
    {
        if (context.state === 'suspended' && 'ontouchstart' in window)
        {
            var unlock = function()
            {
                context.resume().then(function()
                {

twilson63

Cordova Apps with React

React and OnsenUI work great for cordova apps, there are a couple things to keep in mind when working with Cordova Apps.

Relative Paths not Absolute Paths

Since Cordova Apps load from the file system they do not work great with absolute urls, they use relative urls, which means

<script src="/bundle.js"></script> will not work as you might expect when using a web server. Since the root file system of

device is not where the files are located. You can resolve this using a relative url.

Rich-Harris

Edit — February 2019

This gist had a far larger impact than I imagined it would, and apparently people are still finding it, so a quick update:

• TC39 is currently moving forward with a slightly different version of TLA, referred to as 'variant B', in which a module with TLA doesn't block sibling execution. This vastly reduces the danger of parallelizable work happening in serial and thereby delaying startup, which was the concern that motivated me to write this gist
• In the wild, we're seeing (async main(){...}()) as a substitute for TLA. This completely eliminates the blocking problem (yay!) but it's less powerful, and harder to statically analyse (boo). In other words the lack of TLA is causing real problems
• Therefore, a version of TLA that solves the original issue is a valuable addition to the language, and I'm in full support of the current proposal, which you can read here.

I'll leave the rest of this document unedited, for archaeological

laziel

var ctx = null, usingWebAudio = true;

try {
  if (typeof AudioContext !== 'undefined') {
      ctx = new AudioContext();
  } else if (typeof webkitAudioContext !== 'undefined') {
      ctx = new webkitAudioContext();
  } else {
      usingWebAudio = false;
  }

paulirish

What forces layout / reflow

All of the below properties or methods, when requested/called in JavaScript, will trigger the browser to synchronously calculate the style and layout*. This is also called reflow or layout thrashing, and is common performance bottleneck.

Generally, all APIs that synchronously provide layout metrics will trigger forced reflow / layout. Read on for additional cases and details.

Element APIs

Getting box metrics

• elem.offsetLeft, elem.offsetTop, elem.offsetWidth, elem.offsetHeight, elem.offsetParent

joashp

<?php 
// Server file
class PushNotifications {

	// (Android)API access key from Google API's Console.
	private static $API_ACCESS_KEY = 'AIzaSyDG3fYAj1uW7VB-wejaMJyJXiO5JagAsYI';
	// (iOS) Private key's passphrase.
	private static $passphrase = 'joashp';
	// (Windows Phone 8) The name of our push channel.
        private static $channelName = "joashp";

tobek

/* open up chrome dev tools (Menu > More tools > Developer tools)
 * go to network tab, refresh the page, wait for images to load (on some sites you may have to scroll down to the images for them to start loading)
 * right click/ctrl click on any entry in the network log, select Copy > Copy All as HAR
 * open up JS console and enter: var har = [paste]
 * (pasting could take a while if there's a lot of requests)
 * paste the following JS code into the console
 * copy the output, paste into a text file
 * open up a terminal in same directory as text file, then: wget -i [that file]
 */

cliffordp

<?php

/**
 * Automatically login a single WordPress user upon arrival to a specific page.
 *
 * Redirect to home page once logged in and prevent viewing of the login page.
 * Compatible with WordPress 3.9.1+
 * Updated 2014-07-18 to resolve WP_DEBUG notice: "get_userdatabylogin is deprecated since version 3.3! Use get_user_by('login') instead."
 * Updated 2019-07-09 to reformat code, pass 2nd parameter to `do_action()`, and hook into priority 1.
 *