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@manzoorwanijk
manzoorwanijk / yup-with-final-form.js
Last active January 4, 2025 04:25
How to properly use yup validation schema with (React) Final Form?
import * as yup from 'yup';
import { setIn } from 'final-form';
const validationSchema = yup.object({
email: yup.string().email(),
shipping: yup.object({
name: yup.string(),
phone: yup.object({
code: yup.string().matches(/^\+\d+$/i),
number: yup.number().max(10),
@jaydenseric
jaydenseric / RouteIndicator.js
Last active November 29, 2023 11:34
A route change indicator for Next.js using React hooks.
import classNameProp from 'class-name-prop';
import { useRouter } from 'next/router';
import React from 'react';
import styles from './RouteIndicator.module.css';
const DONE_DURATION = 250;
export default function RouteIndicator() {
const router = useRouter();
@dmvaldman
dmvaldman / promisesEM.md
Last active June 1, 2024 00:20
Promises as EventEmitters

Promises as EventEmitters

I was trying to understand JavaScript Promises by using various libraries (bluebird, when, Q) and other async approaches.

I read the spec, some blog posts, and looked through some code. I learned how to

@paulirish
paulirish / what-forces-layout.md
Last active November 7, 2025 17:42
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
@dstevensio
dstevensio / rejoice.md
Last active October 31, 2016 21:17
rejoice + npm = awesome

Brand new project, create dirs "lib/modules", "lib/templates", "config"

lib/modules/home/index.js :

exports.register = function (server, options, next) {

  server.route({
    path: '/',
 method: 'GET',

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).

@agendor
agendor / hapijs-rest-api-tutorial.md
Last active August 31, 2021 08:31
A practical introduction to building a RESTful API with the hapi.js server framework for Node.js
@DavidOliver
DavidOliver / event.save_order.php
Created July 10, 2012 13:58
Symphony CMS event to save a customer order
<?php
require_once(TOOLKIT . '/class.event.php');
Class eventsave_order extends Event{
const ROOTELEMENT = 'save-order';
public $eParamFILTERS = array(
'etm-new-order-notification'
@brendo
brendo / EventTutorial.md
Created April 4, 2011 11:06
Symphony Events: A Detailed Look

Forms have been an integral part of any interactive site since the dawn of time, they promote interactivity and are usually the most common way users interact with a site. It's commonplace that when a form is submitted, the website will take 'action' and do something with the data and then provide a user with the result. Symphony provides this logic layer via Events.

This tutorial assumes you have a basic understanding of how Events work in Symphony (if not, this may be a good introduction) and are semi comfortable writing some PHP code. I'll be showing you some of the lesser known features of Symphony Events, including event priority, event chaining and a brief demonstration of how to write a custom Event. The difficulty level progresses as we go through, but with any luck you'll be able to learn a thing or two :)

Getting Started

The Scenario

Our client requires a form that allows a user to submit some details about their new car purchase. Th