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.
elem.offsetLeft, elem.offsetTop, elem.offsetWidth, elem.offsetHeight, elem.offsetParent
The count of contributions (summary of Pull Requests, opened issues and commits) to public repos at GitHub.com from Wed, 21 Sep 2022 till Thu, 21 Sep 2023.
Only first 1000 GitHub users according to the count of followers are taken. This is because of limitations of GitHub search. Sorting algo in pseudocode:
githubUsers
.filter(user => user.followers > 1000)
| #!/bin/bash | |
| if [ "$1" = "-h" -o "$1" = "--help" -o -z "$1" ]; then cat <<EOF | |
| appify v3.0.1 for Mac OS X - http://mths.be/appify | |
| Creates the simplest possible Mac app from a shell script. | |
| Appify takes a shell script as its first argument: | |
| `basename "$0"` my-script.sh |
npm users sorted by the monthly downloads of their modules, for the range May 6, 2018 until Jun 6, 2018.
Metrics are calculated using top-npm-users.
| # | User | Downloads |
|---|
| // http://paulirish.com/2011/requestanimationframe-for-smart-animating/ | |
| // http://my.opera.com/emoller/blog/2011/12/20/requestanimationframe-for-smart-er-animating | |
| // requestAnimationFrame polyfill by Erik Möller. fixes from Paul Irish and Tino Zijdel | |
| // MIT license | |
| (function() { | |
| var lastTime = 0; | |
| var vendors = ['ms', 'moz', 'webkit', 'o']; |
| function append(separator) { | |
| return typeof separator === "string" ? appender(separator, "") : appender("", "").apply(this, arguments); | |
| } | |
| function appender(separator, s) { | |
| return function tag(literalParts, ...computedParts) { | |
| s += literalParts[0]; | |
| for (let i = 1; i < literalParts.length; ++i) { | |
| s += computedParts[i - 1] + literalParts[i]; | |
| } |
You can install Node Nightlies/RCs via nvm using NVM_NODEJS_ORG_MIRROR environment variable.
Install latest Node RC
NVM_NODEJS_ORG_MIRROR=https://nodejs.org/download/rc/ nvm i nodeInstall latest Node.js Nightly
NVM_NODEJS_ORG_MIRROR=https://nodejs.org/download/nightly/ nvm i node
export x = 42
The proposal you’re about to read is not just a proposal. We have a working implementation of almost everything we discussed here. We encourage you to checkout and build our branch: our fork, with the relevant branch selected. Building and using the implementation will give you a better understanding of what using it as a developer is like.
Our implementation ended up differing from the proposal on some minor points. As our last action item before making a PR, we’re writing documentation on what we did. While I loathe pointing to tests in lieu of documentation, they will be helpful until we complete writing docs: the unit tests.
This repo also contains a bundled version of npm that has a new command, asset. You can read the documentation for and goals of that comma
| // Simulating infinite-length leading lookbehind in JavaScript. Uses XRegExp. | |
| // Captures within lookbehind are not included in match results. Lazy | |
| // repetition in lookbehind may lead to unexpected results. | |
| (function (XRegExp) { | |
| function prepareLb(lb) { | |
| // Allow mode modifier before lookbehind | |
| var parts = /^((?:\(\?[\w$]+\))?)\(\?<([=!])([\s\S]*)\)$/.exec(lb); | |
| return { |