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
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
|
---
title: Function.name
slug: Web/JavaScript/Reference/Global_Objects/Function/name
tags:
- ECMAScript6
- Function
- JavaScript
- Property
translation_of: Web/JavaScript/Reference/Global_Objects/Function/name
---
<div>{{JSRef}}</div>
<p><code><strong><em>function</em>.name</strong></code> 속성(property)은 함수 이름을 반환합니다.</p>
<div>{{js_property_attributes(0,0,1)}}</div>
<p>비표준, ES6 이전 구현에서는 설정가능(<code>configurable</code>) attribute도 <code>false</code>였음을 주의하세요.</p>
<h2 id="설명">설명</h2>
<p><code>name</code> 속성은 함수 이름 또는 (ES6 구현 이전) 익명(anonymous) 함수에 대해서는 빈 문자열을 반환합니다:</p>
<pre class="brush: js">function doSomething() {}
console.log(doSomething.name); // logs "doSomething"
</pre>
<p><code>new Function(...)</code> 또는 그냥 <code>Function(...)</code> 구문으로 생성된 함수는 <code>name</code> 속성을 빈 문자열로 설정합니다. 다음 예에서는 익명 함수가 생성되므로 <code>name</code>은 빈 문자열을 반환합니다:</p>
<pre class="brush: js">var f = function() {};
var object = {
someMethod: function() {}
};
console.log(f.name == ''); // true
console.log(object.someMethod.name == ''); // 역시 true
</pre>
<p>ES6 함수를 구현한 브라우저는 익명 함수 이름을 그 구문상 위치로부터 추측할 수 있습니다. 예를 들어:</p>
<pre class="brush: js">var f = function() {};
console.log(f.name); // "f"</pre>
<p>{{jsxref("Operators/Function", "function 식", "", 1)}}에서 이름으로 함수를 정의할 수 있습니다:</p>
<pre class="brush: js">var object = {
someMethod: function object_someMethod() {}
};
console.log(object.someMethod.name); // logs "object_someMethod"
try { object_someMethod } catch(e) { console.log(e); }
// ReferenceError: object_someMethod가 정의되지 않음
</pre>
<p>함수 이름은 바꿀 수 없습니다, 이 속성은 읽기 전용입니다:</p>
<pre class="brush: js">var object = {
// 익명
someMethod: function() {}
};
object.someMethod.name = 'someMethod';
console.log(object.someMethod.name); // 빈 문자열, someMethod는 익명
</pre>
<p>그러나 바꾸려면, {{jsxref("Object.defineProperty()")}}를 사용할 수 있습니다.</p>
<h2 id="예">예</h2>
<p>객체의 'class'를 확인하기 위해 <code>obj.constructor.name</code>을 사용할 수 있습니다:</p>
<pre class="brush: js">function a() {}
var b = new a();
console.log(b.constructor.name); // logs "a"
</pre>
<h2 id="스펙">스펙</h2>
<table class="standard-table">
<tbody>
<tr>
<th scope="col">스펙</th>
<th scope="col">상태</th>
<th scope="col">설명</th>
</tr>
<tr>
<td>{{SpecName('ES6', '#sec-name', 'name')}}</td>
<td>{{Spec2('ES6')}}</td>
<td>초기 정의.</td>
</tr>
<tr>
<td>{{SpecName('ESDraft', '#sec-name', 'name')}}</td>
<td>{{Spec2('ESDraft')}}</td>
<td> </td>
</tr>
</tbody>
</table>
<h2 id="브라우저_호환성">브라우저 호환성</h2>
<div>{{CompatibilityTable}}</div>
<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>{{CompatChrome(33.0)}}</td>
<td>{{CompatVersionUnknown}}</td>
<td>{{CompatNo}}</td>
<td>{{CompatVersionUnknown}}</td>
<td>{{CompatVersionUnknown}}</td>
</tr>
<tr>
<td>Configurable: true</td>
<td>{{CompatChrome(43.0)}}</td>
<td>{{CompatGeckoDesktop(38)}}</td>
<td>{{CompatUnknown}}</td>
<td>{{CompatUnknown}}</td>
<td>{{CompatUnknown}}</td>
</tr>
<tr>
<td>Inferred names on anonymous functions</td>
<td>{{CompatChrome(51.0)}}</td>
<td>{{CompatNo}} [1]</td>
<td>{{CompatUnknown}}</td>
<td>{{CompatUnknown}}</td>
<td>{{CompatUnknown}}</td>
</tr>
</tbody>
</table>
</div>
<div id="compat-mobile">
<table class="compat-table">
<tbody>
<tr>
<th>Feature</th>
<th>Android</th>
<th>Android Webview</th>
<th>Firefox Mobile (Gecko)</th>
<th>IE Mobile</th>
<th>Opera Mobile</th>
<th>Safari Mobile</th>
<th>Chrome for Android</th>
</tr>
<tr>
<td>Basic support</td>
<td>{{CompatVersionUnknown}}</td>
<td>{{CompatVersionUnknown}}</td>
<td>{{CompatVersionUnknown}}</td>
<td>{{CompatNo}}</td>
<td>{{CompatVersionUnknown}}</td>
<td>{{CompatVersionUnknown}}</td>
<td>{{CompatVersionUnknown}}</td>
</tr>
<tr>
<td>Configurable: true</td>
<td>{{CompatUnknown}}</td>
<td>{{CompatUnknown}}</td>
<td>{{CompatGeckoMobile(38)}}</td>
<td>{{CompatUnknown}}</td>
<td>{{CompatUnknown}}</td>
<td>{{CompatUnknown}}</td>
<td>{{CompatUnknown}}</td>
</tr>
<tr>
<td>Inferred names on anonymous functions</td>
<td>{{CompatNo}}</td>
<td>{{CompatChrome(51.0)}}</td>
<td>{{CompatNo}} [1]</td>
<td>{{CompatUnknown}}</td>
<td>{{CompatUnknown}}</td>
<td>{{CompatUnknown}}</td>
<td>{{CompatChrome(51.0)}}</td>
</tr>
</tbody>
</table>
</div>
<p>[1] {{bug(883377)}} 참조.</p>
|
