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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

This is an easy way to integrate a basic Instagram feed into a WordPress site.

Setup

First, register with Instagram's developer program, then register a client. Set the client ID they provide you in line 4.

Second, get your Instagram user ID by running this in your terminal:

curl -X GET https://api.instagram.com/v1/users/search\?q\=USERNAME\&client_id\=CLIENT_ID

⇐ back to the gist-blog at jrw.fi

Advanced SCSS

Or, 16 cool things you may not have known your stylesheets could do. I'd rather have kept it to a nice round number like 10, but they just kept coming. Sorry.

I've been using SCSS/SASS for most of my styling work since 2009, and I'm a huge fan of Compass (by the great @chriseppstein). It really helped many of us through the darkest cross-browser crap. Even though browsers are increasingly playing nice with CSS, another problem has become very topical: managing the complexity in stylesheets as our in-browser apps get larger and larger. SCSS is an indispensable tool for dealing with this.

This isn't an introduction to the language by a long shot; many things probably won't make sense unless you have some SCSS under your belt already. That said, if you're not yet comfy with the basics, check out the aweso

	const atimport = require("postcss-import");
	const { dest, src, task } = require("gulp");
	const postcss = require("gulp-postcss");
	const purgecss = require("@fullhuman/postcss-purgecss");
	const tailwindcss = require("tailwindcss");

	const TAILWIND_CONFIG = "./tailwind.config.js";
	const SOURCE_STYLESHEET = "./src/style.css";
	const DESTINATION_STYLESHEET = "./build/style.css";

	#!/bin/sh
	read oldrev newrev ref
	branchname=${ref#refs/heads/}
	GITDIR=/path/to/bare.git
	TARGET=/path/to/files

	git --work-tree=$TARGET --git-dir=$GITDIR checkout --force ${branchname}

	//----------------------------------*\
	// TRIGONOMETRY FUNCTIONS
	//----------------------------------*/

	// # Trigonometry in CSS
	//
	// - Through Taylor/Maclaurin polynomial representation: http://people.math.sc.edu/girardi/m142/handouts/10sTaylorPolySeries.pdf
	// - Useful if you don't want to use JS.
	// - With CSS Variables.
	// - `calc()` can't do power (x ^ y) so I used multiplication instead.

	<?php
	add_action('print_media_templates', function(){

	// define your backbone template;
	// the "tmpl-" prefix is required,
	// and your input field should have a data-setting attribute
	// matching the shortcode name
	?>
	<script type="text/html" id="tmpl-my-custom-gallery-setting">
	<label class="setting">

	/**
	* Author: Michael Fields
	* Source: http://wordpress.mfields.org/2010/set-default-terms-for-your-custom-taxonomies-in-wordpress-3-0/
	* Thanks a lot for the nice tweak
	*/


	/**
	* Define default terms for custom taxonomies in WordPress 3.0.1
	*


	# based on http://www.commandlinefu.com/commands/view/2916/backup-all-mysql-databases-to-individual-files
	# but modified for the MAMP path and to include default root/root as username and password

	for I in $(/Applications/MAMP/Library/bin/mysql -u root -proot -e 'show databases' -s --skip-column-names); do /Applications/MAMP/Library/bin/mysqldump -u root -proot $I \| gzip > "$I.sql.gz"; done

	<?php

	function my_register_menu_metabox() {
	$custom_param = array( 0 => 'This param will be passed to my_render_menu_metabox' );

	add_meta_box( 'my-menu-test-metabox', 'Test Menu Metabox', 'my_render_menu_metabox', 'nav-menus', 'side', 'default', $custom_param );
	}
	add_action( 'admin_head-nav-menus.php', 'my_register_menu_metabox' );

	/**