sobi3ch

<?php
/**
 * Pluck an array of values from an array. (Only for PHP 5.3+)
 *
 * @param  $array - data
 * @param  $key - value you want to pluck from array
 *
 * @return plucked array only with key data
 */
function array_pluck($array, $key) {

davidgilbertson

swPrecache.write(path.resolve(__dirname, `../public/service-worker.js`), {
  cacheId: `know-it-all`,
  filename: `service-worker.js`,
  stripPrefix: `public/`,
  staticFileGlobs: [
    `public/app.*.js`, // don't include the polyfills version
    `public/*.{html,ico,json,png}`,
  ],
  dontCacheBustUrlsMatching: [
    /\.(js|json)$/, // I'm cache busting js and json files myself

chronon

Dell XPS 13 9370 Dual Boot Win 10 and Debian Linux

Windows Preparation and Setup

1. Download Win 10 installation ISO and create a bootable USB drive.
   • Download Wifi drivers from Dell and put them on the USB drive.
2. Boot, F12 for system menu, select BIOS Setup.
   • System Configuration -> SATA Operation and change from "RAID On" to "AHCI".
   • Secure Boot -> Secure Boot Enable and change to "Disabled"
3. Reboot, F12 for system menu, select the external USB drive and install Win 10.

magicznyleszek

Vanilla JavaScript

Some vanilla equivalents to jQuery methods.

DOM selectors

jQuery:

efouts

{
    init: function(elevators, floors) {
        elevators.forEach(function(e) {    
            e.isDestination = function(floorNum) {
                return e.destinationQueue.indexOf(floorNum) != -1;
            }

            e.on("floor_button_pressed", function(floorNum) {
                if (!e.isDestination(floorNum))
                    e.goToFloor(floorNum);

tincho

/*
why fixDate?
if we create a JS Date writing:
var d = new Date("2015-05-15")
we are not specifying any timezone
the browser/environment will asume it is UTC+000,
and always represent it in user's LOCAL TIMEZONE!
so, running in an environment located in a UTC-3 zone,
d would actually show 2015-05-14 at 21:00
and may lead to errors.

CharlyJazz

//Before </body> tag
<script>
        var xhr = new XMLHttpRequest();
        xhr.open("get", "cookbook.js", true);
        xhr.onreadystatechange = function () {
            if (xhr.readyState == 4) {
                if (xhr.status >= 200 && xhr.status < 300 || xhr.status == 304) {
                    var script = document.createElement("script");
                    script.type = "text/javascript";
                    script.text = xhr.responseText;

getify

// abstract class, not intended to be instantiated directly
class CalendarItem {
    static #UNSET = Symbol("unset")
    static #isUnset(v) {
        return v === this.#UNSET;
    }
    static {
        for (let [idx,msg] of [
            "ID is already set.",
            "ID is unset.",

addyosmani

Update May 2017

Eric Bidelman has documented some of the common workflows possible with headless Chrome over in https://developers.google.com/web/updates/2017/04/headless-chrome.

Update

If you're looking at this in 2016 and beyond, I strongly recommend investigating real headless Chrome: https://chromium.googlesource.com/chromium/src/+/lkgr/headless/README.md

Windows and Mac users might find using Justin Ribeiro's Docker setup useful here while full support for these platforms is being worked out.

Mon4ik

/* `useLocalStorage`
 * 
 * Features:
 *  - JSON Serializing
 *  - Also value will be updated everywhere, when value updated (via `storage` event)
 */

import { useEffect, useState } from "react";

export default function useLocalStorage<T>(key: string, defaultValue: T): [T, (value: T) => void] {