DavidKuennen

(function (context, trackingId, options) {
    const history = context.history;
    const doc = document;
    const nav = navigator || {};
    const storage = localStorage;
    const encode = encodeURIComponent;
    const pushState = history.pushState;
    const typeException = 'exception';
    const generateId = () => Math.random().toString(36);
    const getId = () => {

DavidBruant

"use strict";

function remember(...args){
    const [key, value] = args;
    
    if(args.length === 1){ // recall
        return new Promise(resolve => {
            setTimeout(() => {
                const val = localStorage.getItem(key);
                

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

bobbygrace

Hello, visitors! If you want an updated version of this styleguide in repo form with tons of real-life examples… check out Trellisheets! https://github.com/trello/trellisheets

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Trello CSS Guide

“I perfectly understand our CSS. I never have any issues with cascading rules. I never have to use !important or inline styles. Even though somebody else wrote this bit of CSS, I know exactly how it works and how to extend it. Fixes are easy! I have a hard time breaking our CSS. I know exactly where to put new CSS. We use all of our CSS and it’s pretty small overall. When I delete a template, I know the exact corresponding CSS file and I can delete it all at once. Nothing gets left behind.”

You often hear updog saying stuff like this. Who’s updog? Not much, who is up with you?

addyosmani

CSS Layout Debugger

A tweet-sized debugger for visualizing your CSS layouts. Outlines every DOM element on your page a random (valid) CSS hex color.

One-line version to paste in your DevTools

Use $$ if your browser aliases it:

~ 108 byte version

larrybotha

Export multiple Adobe Illustrator artboards to png, jpg, pdf

This is a reference to Matthew Ericson's article Export Illustrator Layers and/or Artboards as PNGs and PDFs in case something happens to happen to the article, and if I just forget where to find the exporter online.

Usage

• Drop MultiExporter.js into /Applications/Adobe\ Illustrator\ CS6/Presets.localized/en_GB/Scripts
• Restart Illustrator

ydaniv

// polyfill window.getMatchedCSSRules() in FireFox 6+
if ( typeof window.getMatchedCSSRules !== 'function' ) {
    var ELEMENT_RE = /[\w-]+/g,
            ID_RE = /#[\w-]+/g,
            CLASS_RE = /\.[\w-]+/g,
            ATTR_RE = /\[[^\]]+\]/g,
            // :not() pseudo-class does not add to specificity, but its content does as if it was outside it
            PSEUDO_CLASSES_RE = /\:(?!not)[\w-]+(\(.*\))?/g,
            PSEUDO_ELEMENTS_RE = /\:\:?(after|before|first-letter|first-line|selection)/g;
        // convert an array-like object to array

FGRibreau

//
// Usage: require('./pid')("myapp");
//
var fs        = require('fs');

module.exports = function(appname){
  process.title = appname;

  var PID_FILE  = "/usr/local/var/run/"+process.title+".pid";