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    # Details of AW1 / WA1 ## Dettaglio corso - ogni settimana: 3 ore di lezione/esercitazione - ogni settimana: 1,5 ore di laboratorio (eccetto la prima settimana?) - soluzione 2-3 settimana dopo. ## Tools - VSCode in Linux (o WSL su Win10) - Firebase (with authentication): per vedere un po' di storage cloud. - node.js, express per REST, webpack ## Guides/Books/Biblio - JS: ? - React: primi capitoli di "Fullstack React -The Complete Guide to ReactJS and Friends", by Anthony Accomazzo etc, 2016-2019 ## Sample apps / guides - twitter? DB di amici. Tweet di quelli che seguo NON deve essere lato client! - tweet dei followers: fatto bene serve minimo di logica server - doodle - rogna con le date - gioco a premi online 2 volte al giorno: 20 domande etc.... in sincrono su tutto il mondo, se sbagli sei fuori dalla vincita, se rispondi a tutte e 20 concorri all'estrazione ## Meeting 20191206. Concordato: - Piattaforma: Linux (nodejs etc., al massimo WSL su Win10) - Far vedere un minimo di lato server, fatto in proprio con nodejs, poi passare a framework per evitare di perdere tempo in metodi "stupidi" - Opzioni backend - **self hosted**, open source: esistono framework ragionevoli? - Antonio: Parse (by Facebook); Hood.ie (offline first) - **firebase** (free ma richiede carta credito per funzioni con logica) - Alternative? piattaforma cloud con functions da mettere a disposizione (Google Amazon Azure Heroku IBMBlueMix) - **cloud vero**, comunque, provare ad usarlo - firebase datastore: solo database ma niente logica - storage + microservices (lambda, servizi, callback) - backend di storage + logica fatto da sviluppatore (es. nodejs, express): vantaggio che vedi anche un server da qualche parte ## Note su cosa fare/non fare - JS: let e const e basta, non approfondire aspetti di JS vecchio (var etc.) - JS asincrono serve almeno per il server - serve conoscere un minimo di DOM e JS - in React il DOM non lo vedi neanche (virtualDOM) - Programma: per Firebase SDK 3 ore e' eccessivo - Firebase ti nasconde reattivita' lato client (subscription ecc.): websocket, longpolling, server side events. - alternativa: framework che ti generano il codice del server REST, non bello - OK per provare a fare un'API che ti fai tu sul tuo server, NO fare che trovi tutto in cloud. NO fare un database esplicito, usare Firebase anche da backend se necessario - API se solo storage: si usa gia' fatte (es. Firebase) - API con logica: me lo faccio su mia piattaforma (es. expressjs in nodejs) o su servizio cloud. Da nodejs, se necessario, prendi i dati da firebase, invece di farglieli prendere dal browser ## Course detailed organization ### Lecture 1: HTTP, HTML/CSS (reharsal) * Web architecture and HTTP protocol * HTML5, CSS * Sample "traditional" web app 1.0 (with dynamic part on server, e.g., PHP-like, as seen in DB course at Polito) * Development tools in the browser (including HTTP tab network) * Hosting on servers (use of local node.js with npm package http-server) * Principles of design * LAB: Create a simple web page with some CSS formatting, analyze/debug it with browser development tools. Use of a simple web server based on node.js and a basic HTTP server (NO express) ### Lecture 2: Complex Layouts, Accessibility, Usability * Complex layouts * Advanced CSS and libraries * Usability and Accessibility (WCAG, ARIA) * Good practices(Accessibility testing) * LAB: Create a complex web page layout copying an existing website, using a standard CSS library (e.g., Bootstrap) ### Lecture 3: Introduction to JS * JS as a programming language (C syntax, Python semantic): phylosophy and peculiarities ("comportamenti strani a cui fare attenzione") * JS execution in the browser * JS execution in other environments (Node) * LAB: JS Programming exercise * In node.js (via VScode) * In the browser *??? Forms: where to put them?* ### Lecture 4: Advanced JS * DOM * Events * Callbacks * Closures (NO Functional programming) * ??async/wait?? * LAB: JS "complex" exercise (???Enrico: with callbacks and some async programming e.g. at least timers or similar) *Note: Browser recenti, app "gestionali"* ### Lecture 5: DOM manipulation in JS * Simple DOM manipulations in JS * Example: Forms+tables ?????, Filtering a table (ModelView on a data structure. Hide all, show X,Y; maybe ask the list to a server as autocompletion feature) * LAB: Simple DOM manipulation, maybe using mustache.js??? Malnati: library for templating. ### Lecture 6: AJAX and REST interaction * Ajax * Promise/Fetch * JSON * REST * HTTP verbs * LAB: Example of simple Read&Store (Table with remote completion, NOT message board), with REST server already provided *MISSING: authentication?* ### Lecture 7: Introduction to Firebase * Firebase * Login on Firebase * CRUD on Firebase * JSONP * Subscription on JSON tree in Firebase * LAB: Firebase exercise (shopping list - populated by many users at the same time, showing auto-sync(???)) ### Lecture 8: Single page applications * Single page applications * Reactive programming (in theory) [Antonio: cioe' templating {{}} ] * LAB: ???Enrico: experimenting with a provided single page application ???? ### Lecture 9: Intro to React * npm and modules * Intro to React * MVC/MVVM patterns * LAB: Hello world in React. ### Lecture 10: Web Component e JSX * Web components * JSX * LAB: Costruction of a complex page with components and JSX but NOT dynamic ### Lecture 11: Architecture of an application * Routing * Events * State * App and data model * LAB: Porting of the chat / table of products in React ### Lecture 12: ... free buffer ... * ... * LAB: ... ### Lecture 13: Examples of complex applications * Deploy * LAB: Working on the final project ### Lecture 14: ... ci sara'?

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