{"json_modified": "2015-04-12T11:55:49.014545", "slug": "Web/JavaScript/Reference/Global_Objects/Array/indexOf", "tags": ["Array", "Array methods", "JavaScript"], "locale": "ja", "title": "Array.prototype.indexOf()", "translations": [{"title": "Array.prototype.indexOf()", "url": "/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/indexOf", "tags": ["polyfill", "Reference", "R\u00e9f\u00e9rence", "Array", "prototype", "JavaScript", "Method"], "summary": "", "localization_tags": [], "locale": "en-US", "last_edit": "2015-01-26T04:29:34", "review_tags": []}, {"title": "Array.prototype.indexOf", "url": "/pl/docs/Web/JavaScript/Referencje/Obiekty/Array/indexOf", "tags": ["Dokumentacja_JavaScript", "JavaScript", "Dokumentacje", "Wszystkie_kategorie"], "summary": "", "localization_tags": [], "locale": "pl", "last_edit": "2014-05-31T00:16:03", "review_tags": []}, {"title": "Array.prototype.indexOf()", "url": "/fr/docs/Web/JavaScript/Reference/Objets_globaux/Array/indexOf", "tags": 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"ru", "last_edit": "2015-01-26T04:41:19", "review_tags": []}], "modified": "2015-04-12T11:55:48", "label": "Array.prototype.indexOf()", "localization_tags": [], "url": "/ja/docs/Web/JavaScript/Reference/Global_Objects/Array/indexOf", "last_edit": "2015-04-12T11:28:12", "summary": "\u5f15\u6570\u306b\u4e0e\u3048\u3089\u308c\u305f\u5185\u5bb9\u3068\u540c\u3058\u5185\u5bb9\u3092\u6301\u3064\u914d\u5217\u8981\u7d20\u306e\u5185\u3001\u6700\u521d\u306e\u3082\u306e\u306e\u6dfb\u5b57\u3092\u8fd4\u3057\u307e\u3059\u3002\u5b58\u5728\u3057\u306a\u3044\u5834\u5408\u306f <code>-1</code> \u3092\u8fd4\u3057\u307e\u3059\u3002", "sections": [{"id": "Quick_Links", "title": "Standard built-in objects Array Properties Array.prototype Array.length Methods Array.from() [Translate] Array.isArray() Array.observe() [Translate] Array.of() [Translate] Array.prototype.concat() Array.prototype.copyWithin() [Translate] Array.prototype.entries() [Translate] Array.prototype.every() Array.prototype.fill() [Translate] Array.prototype.filter() Array.prototype.find() [Translate] Array.prototype.findIndex() [Translate] Array.prototype.forEach() Array.prototype.includes() [Translate] Array.prototype.indexOf() Array.prototype.join() Array.prototype.keys() [Translate] Array.prototype.lastIndexOf() Array.prototype.map() Array.prototype.pop() Array.prototype.push() Array.prototype.reduce() Array.prototype.reduceRight() Array.prototype.reverse() Array.prototype.shift() Array.prototype.slice() Array.prototype.some() Array.prototype.sort() Array.prototype.splice() Array.prototype.toLocaleString() [Translate] Array.prototype.toSource() Array.prototype.toString() Array.prototype.unshift() Array.prototype.values() [Translate] Array.prototype[@@iterator]() [Translate] Inheritance: Function Properties arguments Function.arity Function.caller Function.displayName [Translate] Function.length Function.name Function.prototype Methods Function.prototype.apply() Function.prototype.bind() call Function.isGenerator 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"Example:_Finding_all_the_occurrences_of_an_element", "title": "\u4f8b: \u3042\u308b\u8981\u7d20\u306e\u5b58\u5728\u3092\u3059\u3079\u3066\u898b\u3064\u3051\u308b"}, {"id": "Browser_compatibility", "title": "\u30d6\u30e9\u30a6\u30b6\u5b9f\u88c5\u72b6\u6cc1"}, {"id": "See_also", "title": "\u95a2\u9023\u60c5\u5831"}], "id": 684, "review_tags": []}