Skip to content

Instantly share code, notes, and snippets.

@rauchg
rauchg / README.md
Last active January 6, 2024 07:19
require-from-twitter
@paulirish
paulirish / what-forces-layout.md
Last active May 6, 2024 07:54
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

2015-01-29 Unofficial Relay FAQ

Compilation of questions and answers about Relay from React.js Conf.

Disclaimer: I work on Relay at Facebook. Relay is a complex system on which we're iterating aggressively. I'll do my best here to provide accurate, useful answers, but the details are subject to change. I may also be wrong. Feedback and additional questions are welcome.

What is Relay?

Relay is a new framework from Facebook that provides data-fetching functionality for React applications. It was announced at React.js Conf (January 2015).

@kkemple
kkemple / konami-marionette-behavior.js
Last active July 9, 2021 20:14
Konami code Marionette Behavior
'use strict';
var Marionette = require('backbone.marionette'),
Konami;
Konami = Marionette.Behavior.extend({
defaults: {
code : [38, 38, 40, 40, 37, 39, 37, 39, 66, 65]
},
events: {
@bregenspan
bregenspan / PanopticonSimulator.js
Last active December 20, 2015 14:29
Go to http://360gigapixels.com/tokyo-tower-panorama-photo/ , open a Javascript console (Ctrl + Shift + J in Chrome), and run this, to simulate the terrifying surveillance panopticon that looms over us all.
/* Panopticon Simulator v0.1
Scripts http://360gigapixels.com/tokyo-tower-panorama-photo/ to convey a
deep, Enemy Of The State starring Will Smith-reminescent message regarding
the surveillance state and the voyeurism of gigapixel photos.
*/
var people = [
[-7.510113307350065,14.652493577797886,0.5],
[56.83548684296012,16.498978246091596,0.5],
@pmeenan
pmeenan / user-timing-rum.js
Last active January 18, 2024 23:46
Support routine for adding W3C user timing events to a site. Includes some basic polyfill support for browsers that don't support user timing or navigation timing (though the start time for non-navigation timing support could be improved with IE < 9 to use IE's custom start event).
// Support routines for automatically reporting user timing for common analytics platforms
// Currently supports Google Analytics, Boomerang and SOASTA mPulse
// In the case of boomerang, you will need to map the event names you want reported
// to timer names (for mPulse these need to be custom0, custom1, etc) using a global variable:
// rumMapping = {'aft': 'custom0'};
(function() {
var wtt = function(n, t, b) {
t = Math.round(t);
if (t >= 0 && t < 3600000) {
// Google Analytics
@paulirish
paulirish / performance.now()-polyfill.js
Last active August 1, 2023 15:42
performance.now() polyfill (aka perf.now())
// @license http://opensource.org/licenses/MIT
// copyright Paul Irish 2015
// Date.now() is supported everywhere except IE8. For IE8 we use the Date.now polyfill
// github.com/Financial-Times/polyfill-service/blob/master/polyfills/Date.now/polyfill.js
// as Safari 6 doesn't have support for NavigationTiming, we use a Date.now() timestamp for relative values
// if you want values similar to what you'd get with real perf.now, place this towards the head of the page
// but in reality, you're just getting the delta between now() calls, so it's not terribly important where it's placed
@shanselman
shanselman / gist:5422230
Last active March 28, 2024 10:33
Evil Blog Comment Spammer just exposed his template through some error and the whole thing showed up in my comments.
{
{I have|I've} been {surfing|browsing} online more than {three|3|2|4} hours today, yet I never found any interesting article like yours. {It's|It
is} pretty worth enough for me. {In my opinion|Personally|In my view}, if all {webmasters|site owners|website owners|web owners} and bloggers made good content as
you did, the {internet|net|web} will be {much more|a lot more}
useful than ever before.|
I {couldn't|could not} {resist|refrain from} commenting. {Very well|Perfectly|Well|Exceptionally well} written!|
{I will|I'll} {right away|immediately} {take hold of|grab|clutch|grasp|seize|snatch}
your {rss|rss feed} as I {can not|can't} {in finding|find|to find} your {email|e-mail} subscription {link|hyperlink} or {newsletter|e-newsletter} service. Do {you have|you've} any?
{Please|Kindly} {allow|permit|let} me {realize|recognize|understand|recognise|know} {so that|in order that} I {may just|may|could} subscribe.
Thanks.|
@dergachev
dergachev / GIF-Screencast-OSX.md
Last active May 2, 2024 05:55
OS X Screencast to animated GIF

OS X Screencast to animated GIF

This gist shows how to create a GIF screencast using only free OS X tools: QuickTime, ffmpeg, and gifsicle.

Screencapture GIF

Instructions

To capture the video (filesize: 19MB), using the free "QuickTime Player" application:

@peterssonjesper
peterssonjesper / grunt.js
Created October 11, 2012 19:44
Sample grunt configuration
module.exports = function(grunt) {
grunt.initConfig({
// Javascript minification
min : {
code : {
'src' : [
'public/js/file1.js',
'public/js/file2.js',
'public/js/file3.js'
],