blob: e8eb0bd1034c79b1d1b53e850ccb194acebed5c4 (
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
120
|
---
title: Reflect.enumerate()
slug: Archive/Web/JavaScript/Reflect.enumerate
translation_of: Archive/Web/JavaScript/Reflect.enumerate
---
<div>{{JSRef}} {{obsolete_header}}</div>
<div><strong><code>Reflect.enumerate()</code></strong>静态方法通常返回目标对象自身和继承的可迭代属性的一个迭代器,在ECMAScript 2016中已被移除,在各浏览器中已被废弃。</div>
<h2 id="语法">语法</h2>
<pre class="syntaxbox notranslate">Reflect.enumerate(target)
</pre>
<h3 id="参数">参数</h3>
<dl>
<dt><code>target</code></dt>
<dd>获取属性的目标对象。</dd>
</dl>
<h3 id="返回值">返回值</h3>
<p>目标对象自身和继承的可迭代属性的一个迭代器。</p>
<h3 id="Exceptions">Exceptions</h3>
<p> {{jsxref("TypeError")}}, 如果目标不是一个 {{jsxref("Object")}}.</p>
<h2 id="描述">描述</h2>
<p><code>Reflect.enumerate()</code>方法返回目标对象自身和继承的可迭代属性的一个迭代器。</p>
<h2 id="案例">案例</h2>
<h3 id="使用_Reflect.enumerate">使用 <code>Reflect.enumerate()</code></h3>
<pre class="brush: js notranslate">var obj = { x: 1, y: 2 };
for (var name of Reflect.enumerate(obj)) {
console.log(name);
}
// logs "x" and "y"
</pre>
<h2 id="规范">规范</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-reflect.enumerate', 'Reflect.enumerate')}}</td>
<td>{{Spec2('ES2015')}}</td>
<td>初始定义。ECMAScript 2016中已移除。</td>
</tr>
</tbody>
</table>
<h2 id="浏览器兼容性">浏览器兼容性</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>{{CompatNo}}</td>
<td>{{CompatNo}}</td>
<td>{{CompatNo}}</td>
<td>{{CompatNo}}</td>
<td>{{CompatNo}}</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>{{CompatNo}}</td>
<td>{{CompatNo}}</td>
<td>{{CompatNo}}</td>
<td>{{CompatNo}}</td>
<td>{{CompatNo}}</td>
</tr>
</tbody>
</table>
</div>
<h2 id="参照">参照</h2>
<ul>
<li>{{jsxref("Reflect")}}</li>
<li><a href="/en-US/docs/Web/JavaScript/Reference/Statements/for...in">for...in</a></li>
</ul>
|