donmccurdy

/**
 * Creates a RegExp from the given string, converting asterisks to .* expressions,
 * and escaping all other characters.
 */
function wildcardToRegExp (s) {
  return new RegExp('^' + s.split(/\*+/).map(regExpEscape).join('.*') + '$');
}

/**
 * RegExp-escapes all characters in the given string.

ygotthilf

ssh-keygen -t rsa -b 4096 -m PEM -f jwtRS256.key
# Don't add passphrase
openssl rsa -in jwtRS256.key -pubout -outform PEM -out jwtRS256.key.pub
cat jwtRS256.key
cat jwtRS256.key.pub

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

danielgtaylor

Moving to ES6 from CoffeeScript

I fell in love with CoffeeScript a couple of years ago. Javascript has always seemed something of an interesting curiosity to me and I was happy to see the meteoric rise of Node.js, but coming from a background of Python I really preferred a cleaner syntax.

In any fast moving community it is inevitable that things will change, and so today we see a big shift toward ES6, the new version of Javascript. It incorporates a handful of the nicer features from CoffeeScript and is usable today through tools like Babel. Here are some of my thoughts and issues on moving away from CoffeeScript in favor of ES6.

While reading I suggest keeping open a tab to Babel's learning ES6 page. The examples there are great.

Punctuation

Holy punctuation, Batman! Say goodbye to your whitespace and hello to parenthesis, curly braces, and semicolons again. Even with the advanced ES6 syntax you'll find yourself writing a lot more punctuatio

miguelmota

function randomDate(start, end) {
  return new Date(start.getTime() + Math.random() * (end.getTime() - start.getTime()))
}

console.log(randomDate(new Date(2012, 0, 1), new Date()))

roman01la

var xhr = new XMLHttpRequest();
xhr.open('GET', url);
xhr.onload = function() {
    if (xhr.status === 200) {
        var workerSrcBlob, workerBlobURL;
        
            workerSrcBlob = new Blob([xhr.responseText], { type: 'text/javascript' });
            workerBlobURL = window.URL.createObjectURL(workerSrcBlob);
            
            var worker = new Worker(workerBlobURL);

patriciogonzalezvivo

Please consider using http://lygia.xyz instead of copy/pasting this functions. It expand suport for voronoi, voronoise, fbm, noise, worley, noise, derivatives and much more, through simple file dependencies. Take a look to https://github.com/patriciogonzalezvivo/lygia/tree/main/generative

Generic 1,2,3 Noise

float rand(float n){return fract(sin(n) * 43758.5453123);}

float noise(float p){
	float fl = floor(p);
  float fc = fract(p);

dburles

Router.query = (function(router) {
  var current = function() {
    return router.current();
  };

  var currentParams = function() {
    return current().params;
  };

  var currentQueryParams = function() {

Kequc

require 'fileutils'
# Set folder path
folder_path = "/User/absolute/path/to/dir"
# Start at number
start = 0
# Group into directories of size
size = 125
# "%07d" for 7 digits ie 0000001.jpg
padding = "%07d"
# Then run this monster

Fusselwurm

/*global document */
/**
 * define document.querySelector & document.querySelectorAll for IE7
 *
 * A not very fast but small hack. The approach is taken from
 * http://weblogs.asp.net/bleroy/archive/2009/08/31/queryselectorall-on-old-ie-versions-something-that-doesn-t-work.aspx
 *
 */
(function () {
	var