{"json_modified": "2015-05-09T16:40:57.620931", "slug": "Web/JavaScript/Reference/Global_Objects/Map/has", "tags": ["Map", "Experimental", "prototype", "Exp\u00e9rimental", "JavaScript", "ECMAScript6", "Method"], "locale": "ja", "title": "Map.prototype.has()", "translations": [{"title": "Map.prototype.has()", "url": "/en-US/docs/Web/JavaScript/Reference/Global_Objects/Map/has", "tags": ["Map", "Experimental", "prototype", "Exp\u00e9rimental", "JavaScript", "ECMAScript6", "Method"], "summary": "The <code><strong>has()</strong></code> method returns a boolean indicating whether an element with the specified key exists or not.", "localization_tags": [], "locale": "en-US", "last_edit": "2014-10-18T08:13:35", "review_tags": []}, {"title": "Map.prototype.has()", "url": "/fr/docs/Web/JavaScript/Reference/Objets_globaux/Map/has", "tags": ["Map", "Experimental", "prototype", "Exp\u00e9rimental", "JavaScript", "ECMAScript6", "Method"], "summary": "La m\u00e9thode <code><strong>has()</strong></code> renvoie un bool\u00e9en permettant de d\u00e9terminer si l'objet <code>Map</code> en question contient la cl\u00e9 donn\u00e9e.", "localization_tags": [], "locale": "fr", "last_edit": "2015-01-24T09:55:26", "review_tags": []}], "modified": "2015-05-09T16:40:56", "label": "Map.prototype.has()", "localization_tags": ["inprogress"], "url": "/ja/docs/Web/JavaScript/Reference/Global_Objects/Map/has", "last_edit": "2015-05-09T16:40:53", "summary": "\u7279\u5b9a\u306e\u30ad\u30fc\u306b\u5bfe\u3059\u308b\u8981\u7d20\u304c\u5b58\u5728\u3059\u308b\u304b\u3069\u3046\u304b\u3092\u793a\u3059boolean\u3092\u8fd4\u3057\u307e\u3059\u3002", "sections": [{"id": "Quick_Links", "title": "Standard built-in objects Map Properties Map.prototype [Translate] Map.prototype.size [Translate] Methods Map.prototype.clear() Map.prototype.delete() Map.prototype.entries() Map.prototype.forEach() Map.prototype.get() [Translate] Map.prototype.has() Map.prototype.keys() [Translate] Map.prototype.set() [Translate] Map.prototype.values() [Translate] Map.prototype[@@iterator]() [Translate] Inheritance: Function Properties Function.arguments Function.arity Function.caller Function.displayName Function.length Function.name Function.prototype Methods Function.prototype.apply() Function.prototype.bind() Function.prototype.call() Function.prototype.isGenerator() Function.prototype.toSource() Function.prototype.toString() Object Properties Object.prototype.__count__ [Translate] Object.prototype.__noSuchMethod__ Object.prototype.__parent__ Object.prototype.__proto__ [Translate] Object.prototype.constructor [Translate] Methods Object.prototype.__defineGetter__() Object.prototype.__defineSetter__() Object.prototype.__lookupGetter__() Object.prototype.__lookupSetter__() Object.prototype.hasOwnProperty() Object.prototype.isPrototypeOf() Object.prototype.propertyIsEnumerable() Object.prototype.toLocaleString() Object.prototype.toSource() Object.prototype.toString() Object.prototype.unwatch() Object.prototype.valueOf() Object.prototype.watch()"}, {"id": "Summary", "title": "Summary"}, {"id": "Syntax", "title": "\u69cb\u6587"}, {"id": ".E5.BC.95.E6.95.B0", "title": "\u5f15\u6570"}, {"id": ".E6.88.BB.E3.82.8A.E5.80.A4", "title": "\u623b\u308a\u5024"}, {"id": "Examples", "title": "\u4f8b"}, {"id": "Example:_Testing_size_of_all_array_elements", "title": "\u4f8b: has \u30e1\u30bd\u30c3\u30c9\u3092\u4f7f\u3046"}, {"id": ".E4.BB.95.E6.A7.98", "title": "\u4ed5\u69d8"}, {"id": ".E3.83.96.E3.83.A9.E3.82.A6.E3.82.B6.E5.AE.9F.E8.A3.85.E7.8A.B6.E6.B3.81", "title": "\u30d6\u30e9\u30a6\u30b6\u5b9f\u88c5\u72b6\u6cc1"}, {"id": ".E9.96.A2.E9.80.A3.E6.83.85.E5.A0.B1", "title": "\u95a2\u9023\u60c5\u5831"}], "id": 150091, "review_tags": ["editorial"]}