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svelte posts

  • By Joseph Udonsak
    How to Use Svelte and Go to Build a Video Chat App Main tutorial image for the "How to Use a Svelte and Go to Build a Video Chat App" tutorial

    The internet has made the world a much smaller place. Not only can you chat with your loved ones in real-time, but you can also see them and experience an extra level of interaction that words fail to capture.

    In this tutorial, I will show you how simple it is to build a video chat app using Twilio Video, using Svelte for the frontend and Golang for the backend.

    Prerequisites

    To follow this tutorial, you will need the following:

    Getting started

    Brief Overview

    The process flow of the application is as follows:

    1. The frontend displays a form that allows the user to specify a room name.
    2. The room name provided by the user is then passed to the backend.
    3. Using this room name, the backend will then generate and return an Access Token containing …
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  • By Joseph Udonsak
    Develop a Symfony App Using Svelte and Webpack Encore to Manage Your Twilio Message History Develop a Symfony App Using Svelte and Webpack Encore to Manage Your Twilio Message History

    Globalization has changed more things than one can imagine – and software development is not immune. Combined with the recent trend for separating client side and server side operations, poly-repositories have become a de facto standard for application structure.

    However, for all its benefits it may not be sustainable for small teams or businesses eager to break out of the conceptualization phase and deliver an MVP (Minimum Viable Product). In such scenarios, the visibility and singular source of truth offered by a mono-repository can translate to faster and smoother deployment of new features.

    This article will show you how to combine the new kid on the block, Svelte with the tried-and-trusted Symfony to develop an application, all the while using Webpack Encore to bundle the Svelte app. At the end of this article, you will have built an application to interact with your Twilio message history.

    Prerequisites

    To follow this …

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  • By Mia Adjei
    Build a Digital Sticky Notes App with Flask and Svelte Build a Digital Sticky Notes App with Flask and Svelte

    Sticky notes are a great tool for organizing your thoughts or keeping track of things you need to do.

    If you are a student, or anyone thinking about a lot of things at once, there are tons of ways a sticky note could help you out. You can write down the things you need to remember to do, the items on your back-to-school shopping list, notes about what you're learning or thinking, and so much more.

    If you enjoy using paper sticky notes, perhaps you might also be interested in giving digital sticky notes a try. In this tutorial, you'll learn how to build a digital sticky notes application, using Python and Flask for the backend API, JavaScript and Svelte for the UI, and Twilio Sync to store the notes.

    Prerequisites

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  • By Ashley Boucher
    Build a Svelte App that Uses the National Parks Service API to Plan Your Perfect Trip Copy of C03 Blog Text (4)

    The United States National Park Service, created in 1916, operates 423 unique sites that cover 85 million acres of land. Our national parks are some of the United States’ greatest treasures, and most people agree: in 2021, the National Park Service welcomed 297,115,406 visitors across its multitude of locations.

    This summer, if you’re feeling bored, listless, or over the heat, plan a trip to a national park. There are parks to suit absolutely everyone’s needs, and in this article you’ll learn how to build a Svelte app that lets you leverage the National Parks API to search for your perfect national park by filtering through all possible activities and park amenities.

    This article is going to be showing you how to build an app that you can run locally on your machine. The API requests shown in this article are inherently insecure, because if you were to deploy …

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  • By Stephenie Minami Nakajima
    Beginner’s guide to Svelte - From basics to state management and animation Beginner's guide to Svelte

    Background

    Svelte is a JavaScript front-end framework that has been getting a lot of attention in recent years. Svelte was chosen as the most loved tool by developers in the Stack OverFlow Developer Survey 2021. In this tutorial, we’ll introduce Svelte’s basic development methods, as well as advanced topics such as state management and animation.

    Goal

    Learn the basics of Svelte, as well as some advanced development methods, by creating a task management application as shown below.


    Demo of the task management application. The user fills out a form asking for their first and last name. After filling out their name, the user deletes multiple tasks, creates new tasks using the task manager application.

    What’s Svelte?

    Svelte is an open-source front-end framework for creating interactive user interfaces that run in a browser.

    Differences with React and Vue.js

    Svelte, like React and Vue.js, is a component-based JavaScript framework for creating user interfaces.

    However, there is a crucial difference between Svelte and React or Vue.js. Svelte doesn’t use virtual DOM. Svelte is a compiler written in TypeScript that compiles JavaScript at build time, whereas React and …

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  • By Stephenie Minami Nakajima
    はじめてのSvelte - 基礎から応用まで はじめてのSvelte - 基礎から応用まで

    背景

    JavaScriptのフロントエンド開発に関わる技術は移り変わりが目まぐるしく、日々新しいツールやフレームワークが誕生しています。Svelteも近年注目を集めているフロントエンドフレームワークの一つです。2021年のStackOverFlowの開発者サーベイでは、Svelteが開発者から最も愛されているツールとして選ばれました。本稿では、Svelteの基礎的な開発方法から、Storeを使った状態管理やアニメーションの適用方法など、応用までご紹介します。

    目標

    このチュートリアルを最後まで進めると、Svelteの基礎から応用までを学べるとともに、以下のようなタスク管理アプリを作成できます。

    アプリ完成イメージ

    Svelteとは?

    Svelteは、ブラウザ上で動作するユーザーインターフェースを作成するためのオープンソースフレームワークです。

    ReactやVue.jsとの違い

    SvelteはReactVue.jsと同様に、ユーザーインターフェースを作成するためのコンポーネントベースのJavaScriptフレームワークです。

    しかし、SvelteとReactやVue.jsには決定的な違いがあります。Svelteは仮想DOMを使用しません。SvelteはTypeScriptで書かれたコンパイラであり、ビルド時にJavaScriptをコンパイルするのに対し、ReactやVue.jsは実行時に仮想DOMを使ってアプリケーションコードを解釈します。

    Svelteとほかのフレームワークの違いについて詳しくは、ブログ記事「SvelteとReactの基本を比較」を参照してください。

    Svelteを使う …

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  • By Ashley Boucher
    How to Dynamically Render Svelte Components and Avoid Annoying If-Statements dynamicrendersvelte.png

    Consider this scenario: Your blog is running on Svelte, and throughout the blog you display different lists of posts. You have two different types of list formats that you use:

    • On your blog’s main page, you show a list of all your posts with the post title and a summary.
    • On a given post’s page, you show a list of related content with only the posts’ titles and thumbnails.

    Right now, you have a component called AllPosts that loops over every post in the list and renders a child component called Post for each individual post. You pass a prop from AllPosts to Post indicating what format the individual post should take.

    Inside Post, you’re using an if-statement to render the post differently, depending on the prop value. Your code might look something like this:

    <script>
      export let post;
      export let postType;
    </script>
    
    {#if postType == 'preview'}
      <div …
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  • By Ashley Boucher
    Build a Chat App with Twilio Conversations and Svelte chat-svelte.png

    In this article you will learn how to build a chat app using the Twilio Conversations API and the Svelte JavaScript framework. The Conversations API gives you the power to create chat apps that bring your users together over multiple channels: chat, SMS, WhatsApp.

    This API is the next incarnation of Programmable Chat, which will be sunset in 2022.

    Prerequisites

    To get started with this tutorial, you’ll need the following:

    • Node.js installed on your machine, along with a package manager like npm or yarn
    • A free Twilio account (sign up with this link and get $10 in free credit when you upgrade your account)

    The Structure of the Chat App

    How to handle the backend

    This app has both a frontend and a backend. The backend is used to generate an Access Token that you’ll need to request from your frontend in order to make use of the …

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  • By Ashley Boucher
    SvelteとReactの基本を比較 Scelte vs React

    この記事はTwilio Developer VoicesチームのAshley Boucherが執筆したこちらの記事(英語)を日本語化したものです。

    JavaScriptフレームワークについて語る時、Svelteは新顔です。これまでよく噂を耳にしてきましたが、今回試用し、Reactと比較します。

    この記事では、SvelteとReactの違いについて検討し両方のフレームワークを用いて基本的なアプリを構築する方法を紹介します。目標は、以下を取り扱う、中心的概念をデモンストレーションすることです。

    • 構造化コンポーネント
    • 初期化ステート
    • propsの受け渡し
    • ステートのリフト
    • イベントリスナー
    • 動的なスタイル

    さらに、条件付きレンダリングライフサイクルメソッドなど、他にも話すべきトピックは多数ありますが、この記事では基本に焦点を置き、その中で私の感想も述べていきます。

    前提条件

    このチュートリアルを開始するに当たり、以下のツールと技術が必要です。

    Svelte対React

    SvelteとReact.jsは、Webアプリケーション開発向けかつ、コンポーネントベースのJavaScriptフレームワークです。この2つの間の主な違いは、Svelteは仮想DOMを使用しないことです。Svelteはビルド時にコードをプレーンなJavaScriptにコンパイルするのに対し、Reactは実行時にコードを解釈します。

    以下は、Svelt …

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  • By Ashley Boucher
    Let Users Share Their Online Status in Your App with Express, Svelte, and Twilio Sync syncsvelte.png

    Twilio Sync is the very cool technology that underpins other Twilio APIs, such as Twilio Conversations. It allows you to add cloud-stored shared state in your app, opening up totally new opportunities for real-time collaboration and connection.

    In this article, you’ll be learning how to use Twilio Sync in conjunction with Svelte and Express to show who’s online in your app.

    Prerequisites

    Before you get started with this tutorial, make sure you’ve got the following:

    Set up your app and environment

    This app has two parts: a frontend and a backend. The frontend is the part of your app that your users will actually interact with. Your frontend will use the Twilio Sync JavaScript SDK, which requires a special Access Token in order …

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