blob: 19482e19c805d41c157537ed1165a8ceed9653c0 (
plain)
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
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
|
---
title: Map.prototype.clear()
slug: Web/JavaScript/Reference/Global_Objects/Map/clear
tags:
- ECMAScript 2015
- JavaScript
- Mapa
- Prototipo
- metodo
translation_of: Web/JavaScript/Reference/Global_Objects/Map/clear
---
<div>{{JSRef}}</div>
<p>O método <code><strong>clear()</strong></code> remove todos os elementos de um objeto <code>Map</code>.</p>
<h2 id="Sintaxe">Sintaxe</h2>
<pre class="syntaxbox"><code><em>meuMapa</em>.clear();</code></pre>
<h3 id="Valor_retornado">Valor retornado</h3>
<p>{{jsxref("undefined")}}.</p>
<h2 id="Exemplos">Exemplos</h2>
<h3 id="Usando_o_método_clear">Usando o método <code>clear</code></h3>
<pre class="brush: js">var meuMapa = new Map();
meuMapa.set('bar', 'baz');
meuMapa.set(1, 'foo');
meuMapa.size; // 2
meuMapa.has('bar'); // true
meuMapa.clear();
meuMapa.size; // 0
meuMapa.has('bar') // false
</pre>
<h2 id="Especificações">Especificações</h2>
<table class="standard-table">
<tbody>
<tr>
<th scope="col">Especificação</th>
<th scope="col">Status</th>
<th scope="col">Comentário</th>
</tr>
<tr>
<td>{{SpecName('ES2015', '#sec-map.prototype.clear', 'Map.prototype.clear')}}</td>
<td>{{Spec2('ES2015')}}</td>
<td>Definição inicial.</td>
</tr>
<tr>
<td>{{SpecName('ESDraft', '#sec-map.prototype.clear', 'Map.prototype.clear')}}</td>
<td>{{Spec2('ESDraft')}}</td>
<td> </td>
</tr>
</tbody>
</table>
<h2 id="Compatibilidade_com_os_navegadores">Compatibilidade com os navegadores</h2>
<p>{{CompatibilityTable}}</p>
<div id="compat-desktop">
<table class="compat-table">
<tbody>
<tr>
<th>Feature</th>
<th>Chrome</th>
<th>Firefox (Gecko)</th>
<th>Internet Explorer</th>
<th>Opera</th>
<th>Safari</th>
</tr>
<tr>
<td>Basic support</td>
<td>38</td>
<td>{{CompatGeckoDesktop("19.0")}}</td>
<td>11</td>
<td>25</td>
<td>7.1</td>
</tr>
</tbody>
</table>
</div>
<div id="compat-mobile">
<table class="compat-table">
<tbody>
<tr>
<th>Feature</th>
<th>Android</th>
<th>Chrome for Android</th>
<th>Firefox Mobile (Gecko)</th>
<th>IE Mobile</th>
<th>Opera Mobile</th>
<th>Safari Mobile</th>
</tr>
<tr>
<td>Basic support</td>
<td>{{CompatNo}}</td>
<td>38</td>
<td>{{CompatGeckoMobile("19.0")}}</td>
<td>{{CompatNo}}</td>
<td>{{CompatNo}}</td>
<td>8</td>
</tr>
</tbody>
</table>
</div>
<h2 id="Veja_também">Veja também</h2>
<ul>
<li>{{jsxref("Map")}}</li>
</ul>
|
