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@rauchg
rauchg / README.md
Last active April 13, 2025 04:29
require-from-twitter
@paulirish
paulirish / what-forces-layout.md
Last active August 28, 2025 15:03
What forces layout/reflow. The comprehensive list.

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
@chantastic
chantastic / on-jsx.markdown
Last active May 13, 2025 12:04
JSX, a year in

Hi Nicholas,

I saw you tweet about JSX yesterday. It seemed like the discussion devolved pretty quickly but I wanted to share our experience over the last year. I understand your concerns. I've made similar remarks about JSX. When we started using it Planning Center, I led the charge to write React without it. I don't imagine I'd have much to say that you haven't considered but, if it's helpful, here's a pattern that changed my opinion:

The idea that "React is the V in MVC" is disingenuous. It's a good pitch but, for many of us, it feels like in invitation to repeat our history of coupled views. In practice, React is the V and the C. Dan Abramov describes the division as Smart and Dumb Components. At our office, we call them stateless and container components (view-controllers if we're Flux). The idea is pretty simple: components can't

@nolanlawson
nolanlawson / promises_answer_sheet.md
Last active July 26, 2022 08:02
Promises puzzle cheat sheet
@couto
couto / webpack.js
Last active November 7, 2024 13:10
Fetch polyfill with webpack
var webpack = require('webpack');
var HtmlWebpackPlugin = require('html-webpack-plugin');
var path = require('path');
var folders = {
APP: path.resolve(__dirname, '../app'),
BUILD: path.resolve(__dirname, '../build'),
BOWER: path.resolve(__dirname, '../bower_components'),
NPM: path.resolve(__dirname, '../node_modules')
};
@sebmarkbage
sebmarkbage / Enhance.js
Last active June 19, 2025 19:41
Higher-order Components
import { Component } from "React";
export var Enhance = ComposedComponent => class extends Component {
constructor() {
this.state = { data: null };
}
componentDidMount() {
this.setState({ data: 'Hello' });
}
render() {
@addyosmani
addyosmani / README.md
Last active August 24, 2025 14:34 — forked from 140bytes/LICENSE.txt
108 byte CSS Layout Debugger

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

@mathisonian
mathisonian / index.md
Last active August 10, 2024 20:59
requiring npm modules in the browser console

demo gif

The final result: require() any module on npm in your browser console with browserify

This article is written to explain how the above gif works in the chrome (and other) browser consoles. A quick disclaimer: this whole thing is a huge hack, it shouldn't be used for anything seriously, and there are probably much better ways of accomplishing the same.

Update: There are much better ways of accomplishing the same, and the script has been updated to use a much simpler method pulling directly from browserify-cdn. See this thread for details: mathisonian/requirify#5

inspiration

@kevincennis
kevincennis / v8.md
Last active August 19, 2025 09:23
V8 Installation and d8 shell usage

Installing V8 on a Mac

Prerequisites

  • Install Xcode (Avaliable on the Mac App Store)
  • Install Xcode Command Line Tools (Preferences > Downloads)
  • Install depot_tools
    • $ git clone https://chromium.googlesource.com/chromium/tools/depot_tools.git
    • $ nano ~/.zshrc
    • Add path=('/path/to/depot_tools' $path)
@staltz
staltz / introrx.md
Last active September 2, 2025 08:17
The introduction to Reactive Programming you've been missing