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@paulirish
paulirish / what-forces-layout.md
Last active April 24, 2025 09:45
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
@NazarkinRoman
NazarkinRoman / main.js
Created July 17, 2015 14:06
Improved version of Image Comparison Slider from CodyHouse http://codyhouse.co/gem/css-jquery-image-comparison-slider/
// improved drags function, replace it in your code
function drags(dragElement, resizeElement, container, labelContainer, labelResizeElement) {
var $ = jQuery;
dragElement.on('mousedown vmousedown', function (e) {
dragElement.addClass('cd-draggable');
resizeElement.addClass('cd-resizable');
var dragWidth = dragElement.outerWidth(),
xPosition = dragElement.offset().left + dragWidth - e.pageX,
@milanaryal
milanaryal / schema-org-structured-data-markup-using-microdata.html
Last active March 23, 2025 04:33
An example of how to mark up a HTML5 webpage using the schema.org schemas and microdata.
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1">
<!-- The above 3 meta tags *must* come first in the head; any other head content must come *after* these tags -->
<title>Site Title</title>
<link rel="stylesheet" href="/assets/css/style.min.css">
@alexreardon
alexreardon / Native.js
Last active January 30, 2025 11:50
Some vanilla JS methods and patterns
// Native selectors.
(function(window, document) {
'use strict';
var noop = function() {
};
// DOCUMENT LOAD EVENTS
// not needed at the bottom of the page
document.addEventListener('DOMContentLoaded', noop);
@samhernandez
samhernandez / mysqlsync
Last active September 8, 2024 15:07
Sync remote mysql database to local over ssh
#!/bin/bash
# This script assumes you have ssh access to a remote server
# Both databases are backed up to sql files in the same directory
# this script is executed from.
# Usage:
# 1. Make sure this file is executable with `chmod +x mysqlsync`
# 2. Set the credentials for the variables at the top
# (Remember, no spaces around the '=' sign)
# 3. Run it from a directory where you'd like the backup files to go:
@pburtchaell
pburtchaell / styles.css
Last active February 12, 2025 08:45
VH and VW units can cause issues on iOS devices. To overcome this, create media queries that target the width, height, and orientation of iOS devices.
/**
* VH and VW units can cause issues on iOS devices: http://caniuse.com/#feat=viewport-units
*
* To overcome this, create media queries that target the width, height, and orientation of iOS devices.
* It isn't optimal, but there is really no other way to solve the problem. In this example, I am fixing
* the height of element `.foo` —which is a full width and height cover image.
*
* iOS Resolution Quick Reference: http://www.iosres.com/
*/
@ifamily
ifamily / wp-config.php
Last active January 8, 2024 05:06
A universal WordPress wp-config.php which works on local development to staging and production server environments.
<?php
/*
One wp-config for local development to staging to production.
*/
// Define Environments
$environments = array(
@codler
codler / flex.less
Last active October 7, 2023 07:01
Prefix flex for IE10 and Safari / iOS in LESS
/*! Prefix flex for IE10 and Safari / iOS in LESS
* https://gist.github.com/codler/2148ba4ff096a19f08ea
* Copyright (c) 2014 Han Lin Yap http://yap.nu; MIT license */
.display(@value) when (@value = flex) {
display: -ms-flexbox; // IE10
display: -webkit-flex; // Safari / iOS
}
.display(@value) when (@value = inline-flex) {
@paulund
paulund / example-wp-list-table.php
Last active January 28, 2025 16:01
An example code of using the WP_List_Table class. With Pagination.
<?php
/*
* Plugin Name: Paulund WP List Table Example
* Description: An example of how to use the WP_List_Table class to display data in your WordPress Admin area
* Plugin URI: http://www.paulund.co.uk
* Author: Paul Underwood
* Author URI: http://www.paulund.co.uk
* Version: 1.0
* License: GPL2
*/
@barneycarroll
barneycarroll / README.md
Last active August 29, 2022 12:02
Lock and unlock a page's scroll position.

jquery.scrollLock.js

Useful for when a blocking user experience is needed (in my case, didn't want people unwittingly loosing their place by scrolling while a modal required their attention): $.scrollLock() locks the body in place, preventing scroll until it is unlocked.

// Locks the page if it's currently unlocked
$.scrollLock();

// ...or vice versa