Revisione articoli seconda parte

Ciao a tutti 👋
Innanzitutto vi ringrazio per il grande supporto che mi state dando nella traduzione del tutorial!
Avendo quasi concluso la traduzione della seconda parte del tutorial, è necessaria una revisione degli articoli tradotti, in modo da risolvere eventuali errori/migliorarne la qualità.

Importante
Prima di partire con una revisione verificate che non sia già stata effettuata o prenotata. Una volta deciso l'articolo da revisionare notificatelo con un commento, in questo modo evitiamo sovrapposizioni.

Per quanto riguarda le revisioni, per questo tipo di articoli sarà necessaria una sola approvazione!
La lista degli articoli da revisionare:

Document [done]

* [x] [Browser environment, specs](https://github.com/javascript-tutorial/it.javascript.info/blob/master/2-ui/1-document/01-browser-environment) (@longo-andrea)
* [x] [DOM tree](https://github.com/javascript-tutorial/it.javascript.info/blob/master/2-ui/1-document/02-dom-nodes) (@longo-andrea)
* [x] [Walking the DOM](https://github.com/javascript-tutorial/it.javascript.info/blob/master/2-ui/1-document/03-dom-navigation) (@longo-andrea)
* [x] [Searching: getElement*, querySelector*](https://github.com/javascript-tutorial/it.javascript.info/blob/master/2-ui/1-document/04-searching-elements-dom) (@longo-andrea)
* [x] [Node properties: type, tag and contents](https://github.com/javascript-tutorial/it.javascript.info/blob/master/2-ui/1-document/05-basic-dom-node-properties) (@longo-andrea)
* [x] [Attributes and properties](https://github.com/javascript-tutorial/it.javascript.info/blob/master/2-ui/1-document/06-dom-attributes-and-properties) (@longo-andrea)

Introduction to Events [done]

* [x] [Introduction to browser events](https://github.com/javascript-tutorial/it.javascript.info/blob/master/2-ui/2-events/01-introduction-browser-events) (@longo-andrea)
* [x] [Bubbling and capturing](https://github.com/javascript-tutorial/it.javascript.info/blob/master/2-ui/2-events/02-bubbling-and-capturing) (@longo-andrea)
* [x] [Event delegation](https://github.com/javascript-tutorial/it.javascript.info/blob/master/2-ui/2-events/03-event-delegation) (@longo-andrea)
* [x] [Browser default actions](https://github.com/javascript-tutorial/it.javascript.info/blob/master/2-ui/2-events/04-default-browser-action) (@longo-andrea)
* [x] [Dispatching custom events](https://github.com/javascript-tutorial/it.javascript.info/blob/master/2-ui/2-events/05-dispatch-events) (@longo-andrea)

UI Events [done]

* [x] [Mouse events](https://github.com/javascript-tutorial/it.javascript.info/blob/master/2-ui/3-event-details/1-mouse-events-basics) (@longo-andrea)
* [x] [Moving the mouse: mouseover/out, mouseenter/leave](https://github.com/javascript-tutorial/it.javascript.info/blob/master/2-ui/3-event-details/3-mousemove-mouseover-mouseout-mouseenter-mouseleave) (@longo-andrea)
* [x] [Drag'n'Drop with mouse events](https://github.com/javascript-tutorial/it.javascript.info/blob/master/2-ui/3-event-details/4-mouse-drag-and-drop) (@longo-andrea)
* [x] [Pointer events](https://github.com/javascript-tutorial/it.javascript.info/blob/master/2-ui/3-event-details/6-pointer-events) (@longo-andrea)
* [x] [Keyboard: keydown and keyup](https://github.com/javascript-tutorial/it.javascript.info/blob/master/2-ui/3-event-details/7-keyboard-events) (@longo-andrea)
* [x] [Scrolling](https://github.com/javascript-tutorial/it.javascript.info/blob/master/2-ui/3-event-details/8-onscroll) (@longo-andrea)

Forms, controls [done]

* [x] [Form properties and methods](https://github.com/javascript-tutorial/it.javascript.info/blob/master/2-ui/4-forms-controls/1-form-elements)
* [x] [Focusing: focus/blur](https://github.com/javascript-tutorial/it.javascript.info/blob/master/2-ui/4-forms-controls/2-focus-blur)
* [x] [Events: change, input, cut, copy, paste](https://github.com/javascript-tutorial/it.javascript.info/blob/master/2-ui/4-forms-controls/3-events-change-input)
* [x] [Forms: event and method submit](https://github.com/javascript-tutorial/it.javascript.info/blob/master/2-ui/4-forms-controls/4-forms-submit)

Document and resource loading [done]

* [x] [Page: DOMContentLoaded, load, beforeunload, unload](https://github.com/javascript-tutorial/it.javascript.info/blob/master/2-ui/5-loading/01-onload-ondomcontentloaded)
* [x] [Scripts: async, defer](https://github.com/javascript-tutorial/it.javascript.info/blob/master/2-ui/5-loading/02-script-async-defer)
* [x] [Resource loading: onload and onerror](https://github.com/javascript-tutorial/it.javascript.info/blob/master/2-ui/5-loading/03-onload-onerror)

Miscellaneous [done]

* [x] [Mutation observer](https://github.com/javascript-tutorial/it.javascript.info/blob/master/2-ui/99-ui-misc/01-mutation-observer)
* [x] [Selection and Range](https://github.com/javascript-tutorial/it.javascript.info/blob/master/2-ui/99-ui-misc/02-selection-range)
* [x] [Event loop: microtasks and macrotasks](https://github.com/javascript-tutorial/it.javascript.info/blob/master/2-ui/99-ui-misc/03-event-loop)

Frames and windows [done]

* [x] [Popups and window methods](https://github.com/javascript-tutorial/it.javascript.info/blob/master/3-frames-and-windows/01-popup-windows)
* [x] [Cross-window communication](https://github.com/javascript-tutorial/it.javascript.info/blob/master/3-frames-and-windows/03-cross-window-communication)
* [x] [The clickjacking attack](https://github.com/javascript-tutorial/it.javascript.info/blob/master/3-frames-and-windows/06-clickjacking)

## Network requests

* [x] [Fetch](https://github.com/javascript-tutorial/it.javascript.info/blob/master/5-network/01-fetch)
* [ ] [FormData](https://github.com/javascript-tutorial/it.javascript.info/blob/master/5-network/02-formdata)
* [ ] [Fetch: Download progress](https://github.com/javascript-tutorial/it.javascript.info/blob/master/5-network/03-fetch-progress)
* [ ] [Fetch: Abort](https://github.com/javascript-tutorial/it.javascript.info/blob/master/5-network/04-fetch-abort)
* [ ] [Fetch: Cross-Origin Requests](https://github.com/javascript-tutorial/it.javascript.info/blob/master/5-network/05-fetch-crossorigin)
* [ ] [Fetch API](https://github.com/javascript-tutorial/it.javascript.info/blob/master/5-network/06-fetch-api)
* [x] [URL objects](https://github.com/javascript-tutorial/it.javascript.info/blob/master/5-network/07-url)
* [ ] [XMLHttpRequest](https://github.com/javascript-tutorial/it.javascript.info/blob/master/5-network/08-xmlhttprequest)
* [x] [Resumable file upload](https://github.com/javascript-tutorial/it.javascript.info/blob/master/5-network/09-resume-upload)
* [ ] [Long polling](https://github.com/javascript-tutorial/it.javascript.info/blob/master/5-network/10-long-polling)
* [ ] [WebSocket](https://github.com/javascript-tutorial/it.javascript.info/blob/master/5-network/11-websocket)
* [ ] [Server Sent Events](https://github.com/javascript-tutorial/it.javascript.info/blob/master/5-network/12-server-sent-events)

Storing data in the browser [done]

* [x] [Cookies, document.cookie](https://github.com/javascript-tutorial/it.javascript.info/blob/master/6-data-storage/01-cookie)
* [x] [LocalStorage, sessionStorage](https://github.com/javascript-tutorial/it.javascript.info/blob/master/6-data-storage/02-localstorage)

## Regular expressions

* [x] [Patterns and flags](https://github.com/javascript-tutorial/it.javascript.info/blob/master/9-regular-expressions/01-regexp-introduction)
* [ ] [Character classes](https://github.com/javascript-tutorial/it.javascript.info/blob/master/9-regular-expressions/02-regexp-character-classes)
* [ ] [Unicode: flag "u" and class \\p{...}](https://github.com/javascript-tutorial/it.javascript.info/blob/master/9-regular-expressions/03-regexp-unicode) (da rivedere in buona parte, consultare l'originale in inglese)
* [ ] [Anchors: string start ^ and end $](https://github.com/javascript-tutorial/it.javascript.info/blob/master/9-regular-expressions/04-regexp-anchors)
* [ ] [Multiline mode of anchors ^ $, flag "m"](https://github.com/javascript-tutorial/it.javascript.info/blob/master/9-regular-expressions/05-regexp-multiline-mode)
* [ ] [Quantifiers +, *, ? and {n}](https://github.com/javascript-tutorial/it.javascript.info/blob/master/9-regular-expressions/09-regexp-quantifiers)

一覧にある Network requests または Regular expressions のリンクから、未チェックの記事を1つ選び、そのイタリア語訳を英語の原文と比較してください。重複を避けるため、担当する記事をコメントで知らせ、レビューの修正を行い、記事が必要な承認を受けられる状態になったら完了してください。

索引モデルが issue の本文から書いたものです。