From da78a9e329e272dedb2400b79a3bdeebff387d47 Mon Sep 17 00:00:00 2001 From: Peter Bengtsson Date: Tue, 8 Dec 2020 14:42:17 -0500 Subject: initial commit --- .../reference/global_objects/array/keys/index.html | 69 ++++++++++++++++++++++ 1 file changed, 69 insertions(+) create mode 100644 files/ko/web/javascript/reference/global_objects/array/keys/index.html (limited to 'files/ko/web/javascript/reference/global_objects/array/keys') diff --git a/files/ko/web/javascript/reference/global_objects/array/keys/index.html b/files/ko/web/javascript/reference/global_objects/array/keys/index.html new file mode 100644 index 0000000000..4afb826a3e --- /dev/null +++ b/files/ko/web/javascript/reference/global_objects/array/keys/index.html @@ -0,0 +1,69 @@ +--- +title: Array.prototype.keys() +slug: Web/JavaScript/Reference/Global_Objects/Array/keys +tags: + - Array + - ECMAScript 2015 + - Iterator + - JavaScript + - Method + - Prototype + - Reference +translation_of: Web/JavaScript/Reference/Global_Objects/Array/keys +--- +
{{JSRef}}
+ +

keys() 메서드는 배열의 각 인덱스를 키 값으로 가지는 새로운 Array Iterator 객체를 반환합니다.

+ +

{{EmbedInteractiveExample("pages/js/array-keys.html")}}

+ +

구문

+ +
arr.keys()
+ +

반환 값

+ +

새로운 {{jsxref("Array")}} 반복기 객체.

+ +

예제

+ +

키 반복기는 빈 인덱스를 무시하지 않음

+ +
var arr = ['a', , 'c'];
+var sparseKeys = Object.keys(arr);
+var denseKeys = [...arr.keys()];
+console.log(sparseKeys); // ['0', '2']
+console.log(denseKeys);  // [0, 1, 2]
+ +

명세

+ + + + + + + + + + + + + + + + + + + +
SpecificationStatusComment
{{SpecName('ES6', '#sec-array.prototype.keys', 'Array.prototype.keys')}}{{Spec2('ES6')}}Initial definition.
{{SpecName('ESDraft', '#sec-array.prototype.keys', 'Array.prototype.keys')}}{{Spec2('ESDraft')}} 
+ +

브라우저 호환성

+ +

{{Compat("javascript.builtins.Array.keys")}}

+ +

같이 보기

+ + -- cgit v1.2.3-54-g00ecf