Убо Uranbold

Safari's date-picker is the cause of 1/3 of our customer support issues

...and obviously we're building a workaround. But I'm absolutely flabbergasted that a standard <input type="date"> HTML field, in a standard browser, from a company that bases its reputation good design, could be so dreadful.

The context

I'm the developer for a startup that sells a genetic test to recommend medications for high blood pressure. For medical reasons we need to know our customers' birth date. Most of our customers are in their 60s or older. We've found that many of them use iPads or iPhones. And they're the ones who complain to our customer support that our site is unusable.

The problem

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

The introduction to Reactive Programming you've been missing

(by @andrestaltz)

This tutorial as a series of videos

If you prefer to watch video tutorials with live-coding, then check out this series I recorded with the same contents as in this article: Egghead.io - Introduction to Reactive Programming.

	import {
	mobile,
	backend,
	creator,
	web,
	javascript,
	typescript,
	html,
	css,
	reactjs,

	<?php
	/******* DO NOT COPY THE PARTS ABOVE THIS LINE *******/

	/* Change size for Yoast SEO OpenGraph image for all content
	* Credit: Yoast Development team
	* Last Tested: May 19 2020 using Yoast SEO 14.1 on WordPress 5.4.1
	* Accepts WordPress reserved image size names: 'thumb', 'thumbnail', 'medium', 'large', 'post-thumbnail'
	* Accepts custom image size names: https://developer.wordpress.org/reference/functions/add_image_size/
	*/

	/*
	No need for style tags here;
	simply get started by writing
	CSS! Watch as your changes
	are reflected live in the
	preview area. Have fun!
	*/
	.woocommerce-MyAccount-navigation-link a {
	margin: 5px 5px 0 0;
	padding: 15px;

	<?php
	// check for empty-cart get param to clear the cart
	add_action( 'init', 'woocommerce_clear_cart_url' );
	function woocommerce_clear_cart_url() {
	global $woocommerce;

	if ( isset( $_GET['empty-cart'] ) ) {
	$woocommerce->cart->empty_cart();
	}
	}


	/*
	##Device = Desktops
	##Screen = 1281px to higher resolution desktops
	*/

	@media (min-width: 1281px) {

	/* CSS */

	<?php

	/**
	* Get field key for field name.
	* Will return first matched acf field key for a give field name.
	*
	* ACF somehow requires a field key, where a sane developer would prefer a human readable field name.
	* http://www.advancedcustomfields.com/resources/update_field/#field_key-vs%20field_name
	*
	* This function will return the field_key of a certain field.

	function pmpro_currencies_ruble($currencies)
	{
	$currencies['RUB'] = __('Russian Ruble (RUB)', 'pmpro');

	return $currencies;
	}
	add_filter('pmpro_currencies', 'pmpro_currencies_ruble');