---
title: JavaScript Guide
slug: Web/JavaScript/Guide
tags:
  - AJAX
  - JavaScript
  - JavaScript_Guide
  - NeedsTranslation
  - TopicStub
translation_of: Web/JavaScript/Guide
original_slug: Web/JavaScript/Guida
---
<div>{{jsSidebar("JavaScript Guide")}}</div>

<p class="summary">La Guida JavaScript mostra come utilizzare <a href="https://wiki.developer.mozilla.org/en-US/docs/Web/JavaScript">JavaScript</a> e offre una panoramica del linguaggio. Se hai bisogno di informazioni esaustive su una sua funzione, dai un'occhiata alle <a href="https://wiki.developer.mozilla.org/en-US/docs/Web/JavaScript/Reference">reference JavaScript</a>.</p>

<h2 id="Capitoli">Capitoli</h2>

<p>Questa guida è divisa in vari capitoli:</p>

<ul class="card-grid">
 <li><span><a href="/en-US/docs/Web/JavaScript/Guide/Introduction">Introduzione</a></span>

  <p><a href="/en-US/docs/Web/JavaScript/Guide/Introduction#Where_to_find_JavaScript_information">A proposito di questa guida</a><br>
   <a href="/en-US/docs/Web/JavaScript/Guide/Introduction#What_is_JavaScript">A proposito di JavaScript</a><br>
   <a href="/en-US/docs/Web/JavaScript/Guide/Introduction#JavaScript_and_Java">JavaScript e Java</a><br>
   <a href="/en-US/docs/Web/JavaScript/Guide/Introduction#JavaScript_and_the_ECMAScript_Specification">ECMAScript</a><br>
   <a href="/en-US/docs/Web/JavaScript/Guide/Introduction#Getting_started_with_JavaScript">Strumenti</a><br>
   <a href="/en-US/docs/Web/JavaScript/Guide/Introduction#Hello_world">Hello World</a></p>
 </li>
 <li><span><a href="/en-US/docs/Web/JavaScript/Guide/Grammar_and_types">Grammatica &amp; Tipi</a></span>
  <p><a href="/en-US/docs/Web/JavaScript/Guide/Grammar_and_types#Basics">Sintassi base e commenti</a><br>
   <a href="/en-US/docs/Web/JavaScript/Guide/Grammar_and_types#Declarations">Dichiarazioni</a><br>
   <a href="/en-US/docs/Web/JavaScript/Guide/Grammar_and_types#Variable_scope">Scope delle variabili</a><br>
   <a href="/en-US/docs/Web/JavaScript/Guide/Grammar_and_types#Variable_hoisting">Hoisting delle variabili</a><br>
   <a href="/en-US/docs/Web/JavaScript/Guide/Grammar_and_types#Data_structures_and_types">Strutture Dati e Tipi</a><br>
   <a href="/en-US/docs/Web/JavaScript/Guide/Grammar_and_types#Literals">Letterali</a></p>
 </li>
 <li><span><a href="https://wiki.developer.mozilla.org/en-US/docs/Web/JavaScript/Guide/Control_flow_and_error_handling">Controllo di flusso &amp; gestione degli errori</a></span>
  <p><code><a href="/en-US/docs/Web/JavaScript/Guide/Control_flow_and_error_handling#if...else_statement">if...else</a></code><br>
   <code><a href="/en-US/docs/Web/JavaScript/Guide/Control_flow_and_error_handling#switch_statement">switch</a></code><br>
   <a href="/en-US/docs/Web/JavaScript/Guide/Control_flow_and_error_handling#Exception_handling_statements"><code>try</code>/<code>catch</code>/<code>throw</code></a><br>
   <a href="/en-US/docs/Web/JavaScript/Guide/Control_flow_and_error_handling#Utilizing_Error_objects">Oggetto Error</a></p>
 </li>
 <li><span><a href="/en-US/docs/Web/JavaScript/Guide/Loops_and_iteration">Cicli &amp; Iterazioni</a></span>
  <p><code><a href="/en-US/docs/Web/JavaScript/Guide/Loops_and_iteration#for_statement">for</a><br>
   <a href="/en-US/docs/Web/JavaScript/Guide/Loops_and_iteration#while_statement">while</a><br>
   <a href="/en-US/docs/Web/JavaScript/Guide/Loops_and_iteration#do...while_statement">do...while</a><br>
   <a href="/en-US/docs/Web/JavaScript/Guide/Loops_and_iteration#break_statement">break</a>/<a href="/en-US/docs/Web/JavaScript/Guide/Loops_and_iteration#continue_statement">continue</a><br>
   <a href="/en-US/docs/Web/JavaScript/Guide/Loops_and_iteration#for...in_statement">for..in</a><br>
   <a href="/en-US/docs/Web/JavaScript/Guide/Loops_and_iteration#for...of_statement">for..of</a></code></p>
 </li>
</ul>

<ul class="card-grid">
 <li><span><a href="/en-US/docs/Web/JavaScript/Guide/Functions">Funzioni</a></span>

  <p><a href="/en-US/docs/Web/JavaScript/Guide/Functions#Defining_functions">Definire le funzioni</a><br>
   <a href="/en-US/docs/Web/JavaScript/Guide/Functions#Calling_functions">Chiamare le funzioni </a><br>
   <a href="/en-US/docs/Web/JavaScript/Guide/Functions#Function_scope">Scope delle funzioni</a><br>
   <a href="/en-US/docs/Web/JavaScript/Guide/Functions#Closures">Closure</a><br>
   <a href="/en-US/docs/Web/JavaScript/Guide/Functions#Using_the_arguments_object">Argomenti</a> &amp; <a href="/en-US/docs/Web/JavaScript/Guide/Functions#Function_parameters">Parametri</a><br>
   <a href="/en-US/docs/Web/JavaScript/Guide/Functions#Arrow_functions">Funzioni freccia</a></p>
 </li>
 <li><span><a href="/en-US/docs/Web/JavaScript/Guide/Expressions_and_Operators">Espressioni &amp; operatori</a></span>
  <p><a href="/en-US/docs/Web/JavaScript/Guide/Expressions_and_Operators#Assignment_operators">Assegnamento</a> &amp; <a href="/en-US/docs/Web/JavaScript/Guide/Expressions_and_Operators#Comparison_operators">Comparazione</a><br>
   <a href="/en-US/docs/Web/JavaScript/Guide/Expressions_and_Operators#Arithmetic_operators">Operatori aritmetici</a><br>
   <a href="/en-US/docs/Web/JavaScript/Guide/Expressions_and_Operators#Bitwise_operators">Operatori di bitwise</a> &amp; <a href="/en-US/docs/Web/JavaScript/Guide/Expressions_and_Operators#Logical_operators">logici</a><br>
   <a href="/en-US/docs/Web/JavaScript/Guide/Expressions_and_Operators#Conditional_(ternary)_operator">Operatore (ternario) condizionale</a></p>
 </li>
 <li><span><a href="/en-US/docs/Web/JavaScript/Guide/Numbers_and_dates">Numeri &amp; Date</a></span><a href="/en-US/docs/Web/JavaScript/Guide/Numbers_and_dates#Numbers"> Numeri come letterali</a>
  <p><a href="/en-US/docs/Web/JavaScript/Guide/Numbers_and_dates#Number_object">Oggetto <code>Number</code></a><br>
   <a href="/en-US/docs/Web/JavaScript/Guide/Numbers_and_dates#Math_object">Oggetto <code>Math</code></a><br>
   <a href="/en-US/docs/Web/JavaScript/Guide/Numbers_and_dates#Date_object">Oggetto <code>Date</code></a></p>
 </li>
 <li><span><a href="/en-US/docs/Web/JavaScript/Guide/Text_formatting">Formattazione di testi</a></span>
  <p><a href="/en-US/docs/Web/JavaScript/Guide/Text_formatting#String_literals">Stringhe come letterali</a><br>
   <a href="/en-US/docs/Web/JavaScript/Guide/Text_formatting#String_objects">Oggetto <code>String</code></a><br>
   <a href="/en-US/docs/Web/JavaScript/Guide/Text_formatting#Multi-line_template_literals">Template stringhe come letterali</a><br>
   <a href="/en-US/docs/Web/JavaScript/Guide/Text_formatting#Internationalization">Internazionalizzazione</a><br>
   <a href="/en-US/docs/Web/JavaScript/Guide/Regular_Expressions">Espressioni Regolari</a></p>
 </li>
</ul>

<ul class="card-grid">
 <li><span><a href="/en-US/docs/Web/JavaScript/Guide/Indexed_collections">Collezioni Indicizzate</a></span>

  <p><a href="/en-US/docs/Web/JavaScript/Guide/Indexed_collections#Array_object">Vettori</a><br>
   <a href="/en-US/docs/Web/JavaScript/Guide/Indexed_collections#Typed_Arrays">Vettori tipizzati</a></p>
 </li>
 <li><span><a href="/en-US/docs/Web/JavaScript/Guide/Keyed_collections">Collezioni Chiave-Valore</a></span>
  <p><code><a href="/en-US/docs/Web/JavaScript/Guide/Keyed_collections#Map_object">Map</a></code><br>
   <code><a href="/en-US/docs/Web/JavaScript/Guide/Keyed_collections#WeakMap_object">WeakMap</a></code><br>
   <code><a href="/en-US/docs/Web/JavaScript/Guide/Keyed_collections#Set_object">Set</a></code><br>
   <code><a href="/en-US/docs/Web/JavaScript/Guide/Keyed_collections#WeakSet_object">WeakSet</a></code></p>
 </li>
 <li><span><a href="/en-US/docs/Web/JavaScript/Guide/Working_with_Objects">Lavorare con gli Oggetti</a></span>
  <p><a href="/en-US/docs/Web/JavaScript/Guide/Working_with_Objects#Objects_and_properties">Oggetti e proprietà</a><br>
   <a href="/en-US/docs/Web/JavaScript/Guide/Working_with_Objects#Creating_new_objects">Creare Oggetti</a><br>
   <a href="/en-US/docs/Web/JavaScript/Guide/Working_with_Objects#Defining_methods">Definire i metodi</a><br>
   <a href="/en-US/docs/Web/JavaScript/Guide/Working_with_Objects#Defining_getters_and_setters">Getter e setter</a></p>
 </li>
 <li><span><a href="/en-US/docs/Web/JavaScript/Guide/Details_of_the_Object_Model">Dettagli sul modello a Oggetti</a></span>
  <p><a href="/en-US/docs/Web/JavaScript/Guide/Details_of_the_Object_Model#Class-based_vs._prototype-based_languages">OOP basata su prototopi</a><br>
   <a href="/en-US/docs/Web/JavaScript/Guide/Details_of_the_Object_Model#Creating_the_hierarchy">Creare una gerarchia di Oggeti</a><br>
   <a href="/en-US/docs/Web/JavaScript/Guide/Details_of_the_Object_Model#Property_inheritance_revisited">Ereditarietà</a></p>
 </li>
</ul>

<ul class="card-grid">
 <li><span><a href="/en-US/docs/Web/JavaScript/Guide/Iterators_and_Generators">Iteratori &amp; Generatori</a></span>

  <p><a href="/en-US/docs/Web/JavaScript/Guide/Iterators_and_Generators#Iterators">Iteratori</a><br>
   <a href="/en-US/docs/Web/JavaScript/Guide/Iterators_and_Generators#Iterables">Iterabili</a><br>
   <a href="/en-US/docs/Web/JavaScript/Guide/Iterators_and_Generators#Generators">Generatori</a></p>
 </li>
 <li><span><a href="/en-US/docs/Web/JavaScript/Guide/Meta_programming">Meta-programmazione</a></span>
  <p><code><a href="/en-US/docs/Web/JavaScript/Guide/Meta_programming#Proxies">Proxy</a></code><br>
   <a href="/en-US/docs/Web/JavaScript/Guide/Meta_programming#Handlers_and_traps">Gestori e Trappole</a><br>
   <a href="/en-US/docs/Web/JavaScript/Guide/Meta_programming#Revocable_Proxy">Proxy revocabile</a><br>
   <code><a href="/en-US/docs/Web/JavaScript/Guide/Meta_programming#Reflection">Reflect</a></code></p>
 </li>
</ul>

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