1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
|
---
title: Array.prototype.values()
slug: Web/JavaScript/Reference/Global_Objects/Array/values
translation_of: Web/JavaScript/Reference/Global_Objects/Array/values
---
<div>{{JSRef}}</div>
<p> </p>
<p><code style=""><font face="Arial, x-locale-body, sans-serif"><span style="background-color: #ffffff;">Il metodo </span></font><strong>values()</strong></code> restituisce un nuovo oggetto <strong><code>Array Iterator</code></strong> che contiene i valori per ogni indice nell'array.</p>
<p>{{EmbedInteractiveExample("pages/js/array-values.html")}}</p>
<pre class="brush: js">var a = ['a', 'b', 'c', 'd', 'e'];
var iterator = a.values();
console.log(iterator.next().value); // a
console.log(iterator.next().value); // b
console.log(iterator.next().value); // c
console.log(iterator.next().value); // d
console.log(iterator.next().value); // e</pre>
<h2 id="Sintassi">Sintassi</h2>
<pre class="syntaxbox"><var>arr</var>.values()</pre>
<h3 id="Valore_di_ritorno">Valore di ritorno</h3>
<p>Un nuovo oggetto iteratore {{jsxref("Array")}}.</p>
<h2 id="Esempi">Esempi</h2>
<h3 id="Iterazione_utilizzando_il_for...of_loop">Iterazione utilizzando il <code><a href="/en-US/docs/Web/JavaScript/Reference/Statements/for...of">for...of</a></code> loop</h3>
<pre class="brush: js">var arr = ['a', 'b', 'c', 'd', 'e'];
var iterator = arr.values();
for (let letter of iterator) {
console.log(letter);
}
</pre>
<p><strong>Array.prototype.values</strong> è una implementazionde di default di <strong>Array.prototype[Symbol.iterator]</strong>.</p>
<pre>Array.prototype.values === Array.prototype[Symbol.iterator] //true</pre>
<p><strong>TODO</strong>: please write about why we need it, use cases.</p>
<h2 id="Specificazioni">Specificazioni</h2>
<table class="standard-table">
<tbody>
<tr>
<th scope="col">Specification</th>
<th scope="col">Status</th>
<th scope="col">Comment</th>
</tr>
<tr>
<td>{{SpecName('ES2015', '#sec-array.prototype.values', 'Array.prototype.values')}}</td>
<td>{{Spec2('ES2015')}}</td>
<td>Definizione iniziale.</td>
</tr>
<tr>
<td>{{SpecName('ESDraft', '#sec-array.prototype.values', 'Array.prototype.values')}}</td>
<td>{{Spec2('ESDraft')}}</td>
<td> </td>
</tr>
</tbody>
</table>
<h2 id="Browser_compatibility">Browser compatibility</h2>
<div>
<p>{{Compat("javascript.builtins.Array.values")}}</p>
</div>
<h2 id="See_also">See also</h2>
<ul>
<li>{{jsxref("Array.prototype.keys()")}}</li>
<li>{{jsxref("Array.prototype.entries()")}}</li>
<li>{{jsxref("Array.prototype.forEach()")}}</li>
<li>{{jsxref("Array.prototype.every()")}}</li>
<li>{{jsxref("Array.prototype.some()")}}</li>
</ul>
|
