Neste tutorial, vamos aprender a diferença entre primitivos de string e o objeto String, como as strings são indexadas, como acessar caracteres em uma string, além de propriedades e métodos comuns usados em strings.
このガイドでは、Ubuntu 20.04サーバーにNode.jsをインストールする3種類の方法を示します。 ひとつは、Ubuntuのデフォルトのソフトウェアリポジトリからaptを使用してnodejsパッケージをインストールする方法、次に、代替PPAソフトウェアリポジトリからaptを使用して指定したバージョンのnodejsパッケージをインストールする方法、最後に、Nodeバージョンマネージャーをインストールし、これを使って複数のバージョンのnodejsをインストール・管理する方法について説明します。
DRY is a programming strategy that stands for “Don’t Repeat Yourself”. It encourages code re-usability through modular architecture. Vue.js includes several strategies to modularize and re-use repeated snippets of code. In this tutorial, you will try out layout components with slots, mixins, and the new Composition API to implement the DRY strategy in an example app.
In this tutorial, you will build a web scraping application using Node.js and Puppeteer. Your app will grow in complexity as you progress. First, you will code your app to open Chromium and load a special website designed as a web-scraping sandbox: [books.toscrape.com](books.toscrape.com). In the next two steps, you will scrape all the books on a single page of books.toscrape and then all the books across multiple pages. Then you will filter your scraping by category and save your data as JSON.
In this tutorial, you’ll learn three different ways to style React components: plain Cascading Style Sheets (CSS), inline styles with JavaScript-style objects, and JSS, a library for creating CSS with JavaScript. To illustrate these methods, you’ll build an example Alert component that will either show a success style or an error style depending on the prop. You will then refactor it using each of the styling options to see the similarities and differences between each.
Classes are a common abstraction used in object-oriented programming (OOP) languages to describe data structures known as objects. TypeScript has full support for class syntax and also adds features on top of it, like member visibility, abstract classes, generic classes, arrow function methods, and a few others. This tutorial will go through the syntax used to create classes, the different features available, and how classes are treated in TypeScript during the compile-time type-check.
Font Awesomeはウェブサイトでアイコンやソーシャルロゴを表示できるようにしてくれるツールキットです。Reactはユーザーインターフェースの作成に使用するJavaScriptのコードライブラリです。 Font AwesomeチームはReactのコンポーネントを組み込んでいますが、Font Awesome 5とその構造について、基本を理解しておくとよいでしょう。このチュートリアルでは、React Font Awesomeコンポーネントの使い方について学びます。
Like many popular Static Site Generators, Gatsby embraces the use of dynamic web frameworks, using React on the frontend and Node.js on the backend. But Gatsby can also pull in static files and assets, like images, CSS files, and JavaScript files. This tutorial will show you how to best go about adding images, stylesheets globally and as modules, JavaScript files, and arbitrary files like PDFs for your users to download.
L’auteur a choisi le Open Internet/Free Speech Fund pour recevoir un don dans le cadre du programme Write for DOnations. Pour de nombreux programmes en JavaScript, le code est exécuté…
In this short post, we will explore JavaScript’s super useful Array.find method to help find a single item in an array!
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