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@paulirish
paulirish / what-forces-layout.md
Last active May 11, 2024 20:51
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
@davidhund
davidhund / pragmatic-touch-icons.md
Last active September 4, 2020 15:42
Pragmatic Touch Icons

NOTE I'm trying to find the most optimal fav/touch icon setup for my use-cases. Nothing new here. Read Mathias Bynens' articles on re-shortcut-icon and touch icons, a FAQ or a Cheat Sheet for all the details.

I'd like to hear how you approach this: @valuedstandards or comment on this gist.

The issue

You have to include a boatload of link elements pointing to many different images to provide (mobile) devices with a 'favicon' or 'touch icon':

![Touch Icon Links](https://o.twimg.com/2/proxy.jpg?t=HBj6AWh0dHBzOi8vcGhvdG9zLTYuZHJvcGJveC5jb20vdC8yL0FBRGFGY1VRN1dfSExnT3cwR1VhUmtaUWRFcWhxSDVGRjNMdXFfbHRJWG1GNFEvMTIvMjI3OTE2L3BuZy8xMDI0eDc2OC8yL18vMC80L1NjcmVlbnNob3QlMjAyMDE1LTA0LTE0JTIwMTYuNTYuMjYucG5nL0NNejBEU0FCSUFJZ0F5Z0JLQUkvNGR1eDZnMzZmYnlzYWI3

Screencapture and animated gifs

I say "animated gif" but in reality I think it's irresponsible to be serving "real" GIF files to people now. You should be serving gfy's, gifv's, webm, mp4s, whatever. They're a fraction of the filesize making it easier for you to deliver high fidelity, full color animation very quickly, especially on bad mobile connections. (But I suppose if you're just doing this for small audiences (like bug reporting), then LICEcap is a good solution).

Capturing (Easy)

  1. Launch quicktime player
  2. do Screen recording

screen shot 2014-10-22 at 11 16 23 am

@ericflo
ericflo / undo.js
Last active September 15, 2016 09:31
Adds undo capabilities into your React.js component.
var UndoMixin = {
getInitialState: function() {
return {
undo: []
};
},
handleUndo: function() {
if (this.state.undo.length === 0) {
return;
@brandonb927
brandonb927 / osx-for-hackers.sh
Last active May 5, 2024 13:30
OSX for Hackers: Yosemite/El Capitan Edition. This script tries not to be *too* opinionated and any major changes to your system require a prompt. You've been warned.
#!/bin/sh
###
# SOME COMMANDS WILL NOT WORK ON macOS (Sierra or newer)
# For Sierra or newer, see https://github.com/mathiasbynens/dotfiles/blob/master/.macos
###
# Alot of these configs have been taken from the various places
# on the web, most from here
# https://github.com/mathiasbynens/dotfiles/blob/5b3c8418ed42d93af2e647dc9d122f25cc034871/.osx
@mourner
mourner / TileLayer.Common.js
Created February 11, 2012 23:11
Leaflet shortcuts for common tile providers
// Lefalet shortcuts for common tile providers - is it worth adding such 1.5kb to Leaflet core?
L.TileLayer.Common = L.TileLayer.extend({
initialize: function (options) {
L.TileLayer.prototype.initialize.call(this, this.url, options);
}
});
(function () {
@gka
gka / index.html
Created January 3, 2012 00:08
alpha-shapes aka concave hulls in d3
<!DOCTYPE html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html;charset=utf-8">
<title>Alpha-Shapes</title>
<script src="http://mbostock.github.com/d3/d3.js"></script>
<script src="http://mbostock.github.com/d3/d3.geom.js"></script>
<style type="text/css">
path {
@jweir
jweir / protovis_to_link.js
Created November 19, 2010 19:23
How to save SVG data to a file from a web browser