From da78a9e329e272dedb2400b79a3bdeebff387d47 Mon Sep 17 00:00:00 2001 From: Peter Bengtsson Date: Tue, 8 Dec 2020 14:42:17 -0500 Subject: initial commit --- .../global_objects/function/name/index.html | 191 +++++++++++++++++++++ 1 file changed, 191 insertions(+) create mode 100644 files/id/web/javascript/reference/global_objects/function/name/index.html (limited to 'files/id/web/javascript/reference/global_objects/function/name') diff --git a/files/id/web/javascript/reference/global_objects/function/name/index.html b/files/id/web/javascript/reference/global_objects/function/name/index.html new file mode 100644 index 0000000000..1a35d62020 --- /dev/null +++ b/files/id/web/javascript/reference/global_objects/function/name/index.html @@ -0,0 +1,191 @@ +--- +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 +--- +
{{JSRef}}
+ +

Properti function.name mengembalikan nama fungsi.

+ +
{{js_property_attributes(0,0,1)}}
+ +
Perlu di ingat bahwa ini di dalam non-standard, implementasi pre-ES6 atribut configurable juga false.
+ +

Deskripsi

+ +

Properti name property mengembalikan nama sebuah fungsi , atau (sebelum implementasi ES6) string kosong untuk anonymous functions:

+ +
function doSomething() {}
+
+console.log(doSomething.name); // logs "doSomething"
+
+ +

Fungsi di buat menggunakan sintaks new Function(...) atau hanya Function(...) memiliki properti name di set empty string. Pada contoh anonymous functions dibuat, sehingga name mengembalikan empty string:

+ +
var f = function() {};
+var object = {
+  someMethod: function() {}
+};
+
+console.log(f.name == ''); // true
+console.log(object.someMethod.name == ''); // also true
+
+ +

Browser yang mengimplementasikan fungsi ES6 mengambil nama dari anonymous function dari posisi syntactic-nya. Contoh:

+ +
var f = function() {};
+console.log(f.name); // "f"
+ +

Anda bisa mendefinisikan sebuah fungsi dengan nama di {{jsxref("Operators/Function", "function expression", "", 1)}}:

+ +
var object = {
+  someMethod: function object_someMethod() {}
+};
+console.log(object.someMethod.name); // logs "object_someMethod"
+
+try { object_someMethod } catch(e) { console.log(e); }
+// ReferenceError: object_someMethod is not defined
+
+ +

Anda tidak bisa mengubah nama fungsi, Properti ini hanya bisa dibaca:

+ +
var object = {
+  // anonymous
+  someMethod: function() {}
+};
+
+object.someMethod.name = 'someMethod';
+console.log(object.someMethod.name); // empty string, someMethod is anonymous
+
+ +

Untuk mengubah, anda perlu menggunakan {{jsxref("Object.defineProperty()")}}.

+ +

Contoh

+ +

Anda bisa menggunakan obj.constructor.name untuk memeriksa "class" dari sebuah objek:

+ +
function a() {}
+
+var b = new a();
+
+console.log(b.constructor.name); // logs "a"
+
+ +

Spesifikasi

+ + + + + + + + + + + + + + + + + + + +
SpesifikasiStatusComment
{{SpecName('ES6', '#sec-name', 'name')}}{{Spec2('ES6')}}Initial definition.
{{SpecName('ESDraft', '#sec-name', 'name')}}{{Spec2('ESDraft')}} 
+ +

Kompabilitas browser

+ +
{{CompatibilityTable}}
+ +
+ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
FeatureChromeFirefox (Gecko)Internet ExplorerOperaSafari
Basic support{{CompatChrome(33.0)}}{{CompatVersionUnknown}}{{CompatNo}}{{CompatVersionUnknown}}{{CompatVersionUnknown}}
Configurable: true{{CompatChrome(43.0)}}{{CompatGeckoDesktop(38)}}{{CompatUnknown}}{{CompatUnknown}}{{CompatUnknown}}
Inferred names on anonymous functions{{CompatChrome(51.0)}}{{CompatNo}} [1]{{CompatUnknown}}{{CompatUnknown}}{{CompatUnknown}}
+
+ +
+ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
FeatureAndroidAndroid WebviewFirefox Mobile (Gecko)IE MobileOpera MobileSafari MobileChrome for Android
Basic support{{CompatVersionUnknown}}{{CompatVersionUnknown}}{{CompatVersionUnknown}}{{CompatNo}}{{CompatVersionUnknown}}{{CompatVersionUnknown}}{{CompatVersionUnknown}}
Configurable: true{{CompatUnknown}}{{CompatUnknown}}{{CompatGeckoMobile(38)}}{{CompatUnknown}}{{CompatUnknown}}{{CompatUnknown}}{{CompatUnknown}}
Inferred names on anonymous functions{{CompatNo}}{{CompatChrome(51.0)}}{{CompatNo}} [1]{{CompatUnknown}}{{CompatUnknown}}{{CompatUnknown}}{{CompatChrome(51.0)}}
+
+ +

[1] See {{bug(883377)}}.

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