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

bloodyowl

React

A JavaScript library that manages the UI.

What does it do?

React enables you to express in a declarative way what your UI should look like at any point in time; while building your app with little, reusable blocks: components.

jonathanstark

#
# Verify captcha
$post_data = http_build_query(
    array(
        'secret' => CAPTCHA_SECRET,
        'response' => $_POST['g-recaptcha-response'],
        'remoteip' => $_SERVER['REMOTE_ADDR']
    )
);
$opts = array('http' =>

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

---

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?

bastianallgeier

<meta name="description" content="<?php echo $page->description()->or($site->description()) ?>">

p3t3r67x0

Styling native elements

Native HTML controls are a challenge to style. You can style any element in the web platform that uses Shadow DOM with a pseudo element ::pseudo-element or the /deep/ path selector.

video::webkit-media-controls-timeline {
  background-color: lime;
}

video /deep/ input[type=range] {

KittyGiraudel

About Sass and Gzip

I am a little familiar with the idea behind Gzip, thanks to this great video from Frédéric Kayser (in French), however there is a something I am still not sure about.

Basically, a string gets more and more compressed every time it is being repeated. And unless I'm wrong, the longer the string, the better.

Let's talk about Sass for a second. Please consider this mixin:

@mixin center($max-width) {

notabene

Twitter's handling of emojis

I just saw this in a tweet:

<img class="twitter-emoji" src="https://abs.twimg.com/emoji/v1/72x72/1f61a.png" draggable="false" alt="😚" title="Kissing face with closed eyes" aria-label="Emoji: Kissing face with closed eyes">

I couldn't help thinking:

1. Yay, Twitter gives a lot of consideration to Accessibility and this is good.
2. Hey, this alt means nothing to the people who may need it

tdd

Lisez plutôt…

cet article détaillé que j'ai écrit ensuite…

Je laisse le Gist ici pour ne pas casser vos liens, mais bon 😄

Par e-mailing/RSS/etc.

Chaque jour ou chaque semaine :

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