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@bendc
bendc / simulate-typing.js
Created Sep 1, 2017
Fake typing animation
View simulate-typing.js
const trackTime = timing => {
const now = performance.now();
if (!timing.startTime) timing.startTime = now;
const elapsed = now - timing.startTime;
const {duration} = timing;
if (duration != null && duration <= elapsed) timing.startTime = null;
return elapsed;
};
const delay = (callback, duration) => {
@bendc
bendc / randomInterval.js
Created Mar 9, 2017
rAF-based random interval
View randomInterval.js
const randomInterval = (() => {
const random = (min, max) => Math.random() * (max - min) + min;
return (callback, min, max) => {
const time = {
start: performance.now(),
total: random(min, max)
};
const tick = now => {
if (time.total <= now - time.start) {
time.start = now;
@bendc
bendc / easing.css
Created Sep 23, 2016
Easing CSS variables
View easing.css
:root {
--ease-in-quad: cubic-bezier(.55, .085, .68, .53);
--ease-in-cubic: cubic-bezier(.550, .055, .675, .19);
--ease-in-quart: cubic-bezier(.895, .03, .685, .22);
--ease-in-quint: cubic-bezier(.755, .05, .855, .06);
--ease-in-expo: cubic-bezier(.95, .05, .795, .035);
--ease-in-circ: cubic-bezier(.6, .04, .98, .335);
--ease-out-quad: cubic-bezier(.25, .46, .45, .94);
--ease-out-cubic: cubic-bezier(.215, .61, .355, 1);
@bendc
bendc / display-fade.html
Created Jun 22, 2016
Transitioning the opacity of a hidden element
View display-fade.html
<!doctype html>
<meta charset="utf-8">
<title>Example</title>
<style>
div {
width: 100px;
height: 100px;
background: black;
animation-duration: .5s;
@bendc
bendc / async-css.html
Created May 26, 2016
CSS delivery optimization
View async-css.html
<!doctype html>
<html lang="en">
<meta charset="utf-8">
<meta name="viewport" content="initial-scale=1, width=device-width">
<title>Defer non-essential stylesheets</title>
<style>
/* Critical above-the-fold styles */
* { margin: 0; padding: 0 }
:root { background: red }
@nijikokun
nijikokun / example-user.js
Created May 3, 2012
Beautiful Validation... Why have I never thought of this before?!
View example-user.js
var user = {
validateCredentials: function (username, password) {
return (
(!(username += '') || username === '') ? { error: "No Username Given.", field: 'name' }
: (!(username += '') || password === '') ? { error: "No Password Given.", field: 'pass' }
: (username.length < 3) ? { error: "Username is less than 3 Characters.", field: 'name' }
: (password.length < 4) ? { error: "Password is less than 4 Characters.", field: 'pass' }
: (!/^([a-z0-9_-]+)$/i.test(username)) ? { error: "Username contains invalid characters.", field: 'name' }
: false
);
@jlong
jlong / uri.js
Created Apr 20, 2012
URI Parsing with Javascript
View uri.js
var parser = document.createElement('a');
parser.href = "http://example.com:3000/pathname/?search=test#hash";
parser.protocol; // => "http:"
parser.hostname; // => "example.com"
parser.port; // => "3000"
parser.pathname; // => "/pathname/"
parser.search; // => "?search=test"
parser.hash; // => "#hash"
parser.host; // => "example.com:3000"
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