Skip to content

Instantly share code, notes, and snippets.

Shaw shshaw

Block or report user

Report or block shshaw

Hide content and notifications from this user.

Learn more about blocking users

Contact Support about this user’s behavior.

Learn more about reporting abuse

Report abuse
View GitHub Profile
View punk.js
const CODES = ['o', 'W', 'X', 'H', 'i', 'a', 'l', 's', 's','Q', 'v', 'y'];
console.log(`/${CODES.filter((c,i) => i % 3 == 0).join('')}`)
jeffpamer /
Created Mar 16, 2018
Smooth Scrubbing Web Video FFMPEG Mega Command
ffmpeg -i input.mp4 -vcodec libx264 -pix_fmt yuv420p -profile:v baseline -level 3 -an -vf "scale=-1:1440, reverse" -preset veryslow -g 2 output.mp4
// -vcodec libx264 -pix_fmt yuv420p -profile:v baseline -level 3
// Encode for web with a good balance of browser compatibility and compression ratio
// -an
// Strip audio tracks
// -vf "scale=-1:1440, reverse"
// Scale video to 1440px wide, maintaining aspect ratio
	/* Where the box is placed */
	position: ;
	z-index: ;
	float: ;
	place-self: ;
	justify-self: ;
	align-self: ;
	vertical-align: ;
robweychert /
Last active Jan 2, 2020
A simple Sass function for frame-based CSS animation

A simple Sass function for frame-based CSS animation

If you have experience with animation in other media, CSS animation’s percentage-based keyframe syntax can feel pretty alien, especially if you want to be very precise about timing. This Sass function lets you forget about percentages and express keyframes in terms of actual frames:

@function f($frame) {
  @return percentage( $frame / $totalframes )
cecilemuller /
Last active Jun 26, 2019
Using Three.js "examples" (e.g. OrbitControls) with Webpack 2

Javascript files from the examples folder (such as OrbitControls) are not CommonJS or ES Modules, but they can still be used in Webpack bundles:

In package.json:

"dependencies": {
	"three": "0.84.0",
	"webpack": "2.4.1"
nolanlawson /
Last active Nov 28, 2017
"Parens and Performance" – counterpost

"Parens and Performance" – counterpost

Kyle Simpson (@getify) wrote a very thoughtful post decrying optimize-js, which is a tool I wrote that exploits known optimizations in JavaScript engines to make JS bundles parse faster (especially minified bundles, due to what could be reasonably described as a bug in Uglify).

Kyle lays out a good case, but I tend to disagree with nearly all his points. So here's my rebuttal.

danielberndt / load-from-json.js
Last active Apr 15, 2019
load pixi.js sprite sheet jsons via webpack
View load-from-json.js
this allows you to use all of webpack's goodness to load your sprites.
here's some benefits:
- saving one roundtrip since webpack's json-loader will inline the json data into the script. Thus it doesn't need to be loaded from the server first
- use a lot of the file-loader power and beyond to create cache-busting urls, and apply image-minification via e.g. image-webpack-loader
import PIXI from "pixi.js";
Restuta /
Last active Feb 15, 2020
Sizes of JS frameworks, just minified + minified and gzipped, (React, Angular 2, Vue, Ember)

Below is the list of modern JS frameworks and almost frameworks – React, Vue, Angular, Ember and others.

All files were downloaded from and named accordingly. Output from ls command is stripped out (irrelevant stuff)

As-is (minified)

$ ls -lhS
566K Jan  4 22:03 angular2.min.js
staltz /
Last active Dec 28, 2018
How to show migration guides in GitHub Markdown

How to show migration guides in GitHub Markdown

Use the diff code highlighting tag.

  - foo
  + bar


paulirish /
Last active Feb 17, 2020
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.


Box metrics
  • elem.offsetLeft, elem.offsetTop, elem.offsetWidth, elem.offsetHeight, elem.offsetParent
  • elem.clientLeft, elem.clientTop, elem.clientWidth, elem.clientHeight
  • elem.getClientRects(), elem.getBoundingClientRect()
You can’t perform that action at this time.