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Introduction to Preact : A smaller, faster React alternative - LogRocket Blog
Preact is a JavaScript library that describes itself as a fast 3kB alternative to React with the same ES6 API. As a frequent user of React, I’d always wanted to try out Preact and see what it offers, and the differences between Preact and React. In this article, I’ll do an introduction to Preact, its key concepts and differences between Preact and React. I’ll also demonstrate how Preact works with
GitHub - mitranim/posterus: Composable async primitives with cancelation, control over scheduling, and coroutines. Superior replacement for JS Promises.
Humans and even programs change their minds all the time. Many behaviors we consider intuitive rely on some form of cancelation. Start playing a video, then hit stop. Should it finish playing? Click a web link, then immediately click another. Should it still load the first link? Start uploading a file, then hit stop. Should it upload anyway? Run an infinite loop. Should it hog a CPU core until you
Investigating Performance of Object#toString in ES2015
A relevant ad will be displayed here soon. These ads help pay for my hosting. Please consider disabling your ad blocker on Pony Foo. These ads help pay for my hosting. In this article, we’ll discuss how Object.prototype.toString() performs in the V8 engine, why it’s important, how it changed with the introduction of ES2015 symbols, and how the baseline performance can be improved by up to 6x (base
Passing data between Promise callbacks
In Promise-based code, there are usually many callbacks, each one having a separate scope for variables. What if you want to share data between those callbacks? This blog post describes techniques for doing so. The problem # The following code illustrates a common problem with Promise callbacks: The variable connection (line A) exists in one scope, but needs to be accessed in other scopes (line B
ES Modules in Node Today!
I’m excited to announce the release of @std/esm (standard/esm), an opt-in, spec-compliant, ECMAScript (ES) module loader that enables a smooth transition between Node and ES module formats with near built-in performance! This fast, small, zero-dependency package is all you need to enable ES modules in Node today 🎉🎉🎉 @std/esm used in the Node REPL after `npm --save @std/esm`A tale of two module
Javascript Performance
We've been busy Perf Prereqs Common Perf Strategies Perf Mechanics What's Next in JS Perf?
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We're under construction. Please check back for an update soon.
文字列リテラルとU+2028 - ぶれすとつーる
元気にインターネットしてたらユーザの入力した値をこんな感じでDOMに埋め込んでるサイトをみつけた <a href='javascript:edit(2,{"a":"どらえもん","b":["×","×"],"c":"ふごふご"},1)'> ほげええ </a> 入力値いろいろかえて遊んでみたらだいたいの文字列はエスケープはされてたけど曰くのU+2028はsyntax errorだしてた Uncaught SyntaxError: Unexpected token ILLEGAL これは文字列リテラルの仕様で含められない値として決められてるLineTerminatorがu+2028であることが起因してる es5 #7.8.4 es5 #7.3 7.8.4 String Literals DoubleStringCharacter :: SourceCharacter but not doubl
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GitHub - mobx-little-router/mobx-little-router: Implementation of an universal router with MobX as the state management solution.
GitHub - PAIR-code/facets: Visualizations for machine learning datasets
GitHub - ream/ream: A Vue 3 framework, powered by Vite.
GitHub - ai/nanoid: A tiny (118 bytes), secure, URL-friendly, unique string ID generator for JavaScript
Module Graph Generator
clarify the exact MIME for .mjs by bmeck · Pull Request #61 · nodejs/node-eps
GitHub - bahmutov/repeat-it: Run a Mocha BDD "it" test as many times as you want
GitHub - gajus/scream: Dynamic viewport management for mobile. Manage viewport in different states of device orientation. Scale document to fit viewport. Calculate the dimensions of the "minimal" iOS 8 view relative to your viewport width.
GitHub - uupaa/ScreenOrientationEvent.js: Screen orientation wrapper.
GitHub - weblinc/media-match: Test css media queries in javascript. A faster polyfill for matchMedia support. Follow the project on Twitter @mediamatchjs.
GitHub - microsoft/napajs: Napa.js: a multi-threaded JavaScript runtime
