こんにちは！株式会社ｉｉｍｏｎでフロントエンジニアをしている「ひが」です！ 本記事はアドベントカレンダー19日目の記事になります！ 先日夢で「メリークロージャマス！！！」と叫んでスベる夢を見ました。 冬だからか、みなさん冷たかったです（現実では暖かいです） そのようなこともあり、思い切って記事にしてみようと思いました！ どうか、暖かい目で見守っていただけると嬉しく思います！！ 本題 本題ですが、みなさんはクロージャをご存知でしょうか。 MDNよりお言葉を借りると クロージャは、組み合わされた（囲まれた）関数と、その周囲の状態（レキシカル環境）への参照の組み合わせ です！ 初見だと何言ってるかよくわからないですよね。 本記事でざっくり掘っていきますので、是非一緒に見ていただければ幸いです！ ※ 本記事は基本的にMDNの内容に沿う形で進めつつ、たまに脱線したり小ネタを挟んだりします ※ コード
Syntax Highlighting in Hand-Coded Websites The problem I have been trying to identify practical reasons why hand-coding websites with HTML and CSS is so hard (by hand-coding, I mean not relying on frameworks, generators or 3rd party scripts that modify the DOM). Let's say, I want to make a blog. What are the actual things that prevent me from making—and maintaining—it by hand? What would it take t
Today we’re excited to announce the release of TypeScript 5.4! If you’re not familiar with TypeScript, it’s a language that builds on top of JavaScript by making it possible to declare and describe types. Writing types in our code allows us to explain intent and have other tools check our code to catch mistakes like typos, issues with null and undefined, and more. Types also power TypeScript’s edi
Comprehensive guide to JavaScript performance analysis using Chrome DevTools
Comprehensive guide to JavaScript performance analysis using Chrome DevTools Let's see how to navigate the Chrome Devtools Performance tab to effectively analyse and improve the performance of your JavaScript while avoiding common errors. Our use case will be improving the rendering FPS of a real-world canvas library. A few weeks ago a colleague of mine and I were looking at the canvas engine comp
Today we are excited to announce the availability of TypeScript 5.4 Beta. To get started using the beta, you can get it through NuGet, or through npm with the following command: npm install -D typescript@beta Here’s a quick list of what’s new in TypeScript 5.4! Preserved Narrowing in Closures Following Last Assignments The NoInfer Utility Type Object.groupBy and Map.groupBy Support for require() c
Today we’re excited to announce our Release Candidate of TypeScript 5.4! Between now and the stable release of TypeScript 5.4, we expect no further changes apart from critical bug fixes. To get started using the RC, you can get it through NuGet, or through npm with the following command: npm install -D typescript@rc Here’s a quick list of what’s new in TypeScript 5.4! Preserved Narrowing in Closur
Photo by Clément Hélardot on UnsplashWhen we begin a project, we tend to focus on things like scalability, usability, availability, security, and others. But, as the application grows, we may observe a decline in its speed and performance. It is often only at this point that we recognize the need for optimization. In this article, we will present some of the most common techniques for optimizing c
Here is a list of common JavaScript interview questions with detailed answers to help you prepare for the interview as a JavaScript developer. JavaScript continues to be a cornerstone of web development, powering dynamic and interactive experiences across the web. As the language evolves, so does the complexity and scope of interview questions for JavaScript developers. Whether you’re a fresher de
Update 1.88.1: The update addresses these issues. Downloads: Windows: x64 Arm64 | Mac: Universal Intel silicon | Linux: deb rpm tarball Arm snap Welcome to the March 2024 release of Visual Studio Code. There are many updates in this version that we hope you'll like, some of the key highlights include: Apply custom editor labels - Distinguish between editors with same file names. Locked scrolling -
j次のブックマーク
k前のブックマーク
lあとで読む
eコメント一覧を開く
oページを開く
歴史を感じつつ、クロージャで遊んでみた（JavaScript編） - iimon TECH BLOG
Font with Built-In Syntax Highlighting
Announcing TypeScript 5.4 - TypeScript
Announcing TypeScript 5.4 Beta - TypeScript
Announcing TypeScript 5.4 RC - TypeScript
React & Javascript Optimization Techniques
JavaScript Interview Questions
March 2024 (version 1.88)