greggman

So I had a sample that wasn't working in firefox. It had code like ths

"use strict";
var devicePixelRation = window.devicePixelRatio || 1;

That worked fine on Chrome but broke on Firefox with

TypeError: setting a property that has only a getter

So first thing I learned something I didn't know. Variables declared with var in the global scope

holman

# Manually download each month's call history from t-mobile.com and toss them in
# a directory. Or do it automatically using computers, who cares.
#
# Install spark: https://github.com/holman/spark

cat * | grep 266-2278 | sort | cut -d, -f5 | spark
# ▂█▁▃▅

echo "fuck comcastttttttttttttttttttttttttttttttttttttttttt"
# ⒻⓊⒸⓀ ⒸⓄⓂⒸⒶⓈⓉ

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

WengerK

Article Ressources - MacOS - Trigger Notification Center when long running commands finishes

This is the Gist repository for my article MacOS - Trigger Notification Center when long running commands finishes.

Be aware that this article has been wrote for the Blog of Antistatique — Web Agency in Lausanne, Switzerland. A place where I work as Full Stack Web Developer.

Feel free to read it the full article on Medium or check it out on Antistatique.

jesperorb

Handle CORS Client-side

Cross-origin resource sharing (CORS) is a mechanism that allows restricted resources (e.g. fonts) on a web page to be requested from another domain outside the domain from which the first resource was served. This is set on the server-side and there is nothing you can do from the client-side to change that setting, that is up to the server/API. There are some ways to get around it tho.

Sources : MDN - HTTP Access Control | Wiki - CORS

CORS is set server-side by supplying each request with additional headers which allow requests to be requested outside of the own domain, for example to your localhost. This is primarily set by the header:

Access-Control-Allow-Origin

dkundel

type Safe<T> = { [P in keyof T]: string };

function getSafeEnvironment<T extends {}>(e: T): Safe<T> {
  return new Proxy(e, {
    get: function(env: any, key: string): string {
      const value: any = env[key];
      if (value == null) {
        throw new Error("'" + key + "' environment variable is not set.");
      }
      return value;