{"json_modified": "2015-12-25T07:36:14.758402", "slug": "Web/JavaScript/Reference/Global_Objects/undefined", "tags": [], "locale": "ko", "title": "undefined", "translations": [{"title": "undefined", "url": "/en-US/docs/Web/JavaScript/Reference/Global_Objects/undefined", "tags": ["JavaScript"], "summary": "The global <code><strong>undefined</strong></code> property represents the primitive value <code><a class=\"glossaryLink\" href=\"/en-US/docs/Glossary/Undefined\" title=\"undefined: A primitive value automatically assigned to variables that have just been declared or to formal arguments for which there are no actual arguments.\">undefined</a></code>. It is one of JavaScript's <a class=\"glossaryLink\" href=\"/en-US/docs/Glossary/Primitive\" title=\"primitive types: A primitive (primitive value, primitive data type) is data that is not an object and has no methods. In JavaScript, there are 6 primitive data types: string, number, boolean, null, undefined, symbol (new in ECMAScript 2015).\">primitive types</a>.", "localization_tags": [], "locale": "en-US", "last_edit": "2015-08-25T10:13:46", "review_tags": []}, {"title": "undefined", "url": "/ja/docs/Web/JavaScript/Reference/Global_Objects/undefined", "tags": ["JavaScript"], "summary": "\u30b0\u30ed\u30fc\u30d0\u30eb\u30d7\u30ed\u30d1\u30c6\u30a3 <code><strong>undefined</strong></code> \u306f\u30d7\u30ea\u30df\u30c6\u30a3\u30d6\u5024 <code><a class=\"glossaryLink\" href=\"/en-US/docs/Glossary/Undefined\" title=\"undefined: A primitive value automatically assigned to variables that have just been declared or to formal arguments for which there are no actual arguments.\">undefined</a></code> \u3092\u8868\u3057\u307e\u3059\u3002\u3053\u308c\u306f JavaScript \u306b\u304a\u3051\u308b<a class=\"glossaryLink\" href=\"/en-US/docs/Glossary/Primitive\" title=\"&#x30D7;&#x30EA;&#x30DF;&#x30C6;&#x30A3;&#x30D6;&#x578B;: A primitive (primitive value, primitive data type) is data that is not an object and has no methods.\">\u30d7\u30ea\u30df\u30c6\u30a3\u30d6\u578b</a>\u306e\u4e00\u3064\u3067\u3059\u3002", "localization_tags": [], "locale": "ja", "last_edit": "2015-08-20T21:42:17", "review_tags": ["technical", "editorial"]}, {"title": "undefined", "url": "/es/docs/Web/JavaScript/Referencia/Objetos_globales/undefined", "tags": ["JavaScript"], "summary": "El valor undefined.", "localization_tags": [], "locale": "es", "last_edit": "2014-11-19T12:26:22", "review_tags": []}, {"title": "undefined", "url": "/pl/docs/Web/JavaScript/Referencje/Obiekty/undefined", "tags": ["JavaScript"], "summary": "Warto\u015b\u0107 niezdefiniowana.", "localization_tags": [], "locale": "pl", "last_edit": "2015-04-25T02:23:27", "review_tags": []}, {"title": "undefined", "url": "/fr/docs/Web/JavaScript/Reference/Objets_globaux/undefined", "tags": ["R\u00e9f\u00e9rence", "Reference", "JavaScript"], "summary": "La propri\u00e9t\u00e9 globale <strong><code>undefined</code></strong> repr\u00e9sente la valeur <code>undefined</code><em>.</em> Cette valeur est l'<a href=\"/fr/docs/Web/JavaScript/Structures_de_donn&#xE9;es#Le_type_ind.C3.A9fini\">un des types primitifs de JavaScript</a>.", "localization_tags": [], "locale": "fr", "last_edit": "2015-09-16T05:35:01", "review_tags": []}, {"title": "undefined", "url": "/zh-CN/docs/Web/JavaScript/Reference/Global_Objects/undefined", "tags": [], "summary": "<code>undefined</code>\u6709\u591a\u91cd\u89d2\u8272,\u901a\u5e38\u60c5\u51b5\u4e0b,\u6211\u4eec\u6240\u8bf4\u7684<code>undefined</code>\u90fd\u6307\u7684\u662f\u5168\u5c40\u5bf9\u8c61\u7684\u4e00\u4e2a\u5c5e\u6027<code>\"undefined\"</code>.", "localization_tags": [], "locale": "zh-CN", "last_edit": "2015-04-18T00:35:31", "review_tags": []}, {"title": "undefined", "url": "/ru/docs/Web/JavaScript/Reference/Global_Objects/undefined", "tags": ["JavaScript"], "summary": "\u0417\u043d\u0430\u0447\u0435\u043d\u0438\u0435 \u0433\u043b\u043e\u0431\u0430\u043b\u044c\u043d\u043e\u0433\u043e \u0441\u0432\u043e\u0439\u0441\u0442\u0432\u0430 <code><strong>undefined</strong></code> \u043f\u0440\u0435\u0434\u0441\u0442\u0430\u0432\u043b\u044f\u0435\u0442 \u0437\u043d\u0430\u0447\u0435\u043d\u0438\u0435 <code>undefined</code>. \u042d\u0442\u043e \u043e\u0434\u043d\u043e \u0438\u0437 <a href=\"/ru/docs/Glossary/Primitive\" class=\"glossaryLink\" title=\"&#x41E;&#x43F;&#x440;&#x435;&#x434;&#x435;&#x43B;&#x435;&#x43D;&#x438;&#x435; &#x442;&#x435;&#x440;&#x43C;&#x438;&#x43D;&#x430; &#xAB;&#x43F;&#x440;&#x438;&#x43C;&#x438;&#x442;&#x438;&#x432;&#x43D;&#x44B;&#x445; &#x437;&#x43D;&#x430;&#x447;&#x435;&#x43D;&#x438;&#x439;&#xBB; &#x435;&#x449;&#x451; &#x43D;&#x435; &#x43D;&#x430;&#x43F;&#x438;&#x441;&#x430;&#x43D;&#x43E;; &#x43C;&#x43E;&#x436;&#x435;&#x442; &#x431;&#x44B;&#x442;&#x44C;, &#x432;&#x44B; &#x43D;&#x430;&#x43F;&#x438;&#x448;&#x435;&#x442;&#x435;?\">\u043f\u0440\u0438\u043c\u0438\u0442\u0438\u0432\u043d\u044b\u0445 \u0437\u043d\u0430\u0447\u0435\u043d\u0438\u0439</a> JavaScript.", "localization_tags": [], "locale": "ru", "last_edit": "2014-11-19T12:37:14", "review_tags": []}, {"title": "undefined", "url": "/de/docs/Web/JavaScript/Reference/Global_Objects/undefined", "tags": ["JavaScript"], "summary": "Die globale Eigenschaft <code><strong>undefined</strong></code> repr\u00e4sentiert den Wert <code>undefined</code>. Dieser Wert ist einer der <a href=\"/de/docs/Glossary/Primitive\" class=\"glossaryLink\" title=\"Die Definition dieses Ausdrucks (primitiven Typen) wurde noch nicht geschrieben; bitte hilf mit und trage sie bei!\">primitiven Typen</a> in JavaScript.", "localization_tags": [], "locale": "de", "last_edit": "2015-01-21T01:35:47", "review_tags": []}, {"title": "undefined", "url": "/ca/docs/Web/JavaScript/Referencia/Objectes_globals/undefined", "tags": [], "summary": "El valor de la propietat global <code><strong>undefined</strong></code> representa el valor <code>undefined</code>. \u00c9s un dels <a href=\"/en-US/docs/Glossary/Primitive\" class=\"glossaryLink\" title=\"tipus primitius: A primitive (primitive value, primitive data type) is data that is not an object and has no methods.\">tipus primitius</a> de JavaScript.", "localization_tags": [], "locale": "ca", "last_edit": "2015-05-06T12:09:38", "review_tags": ["editorial"]}, {"title": "undefined", "url": "/pt-BR/docs/Web/JavaScript/Reference/Global_Objects/undefined", "tags": [], "summary": "O valor global <code>undefined</code> representa um valor indefinido. Trata-se de um dos\u00a0<a href=\"/pt-BR/docs/Glossario/Primitivo\" class=\"glossaryLink\" title=\"tipos primitivos: Um&#xA0;primitivo&#xA0;(valor primitivo, tipo de dados primitivo) &#xE9; um dado que n&#xE3;o &#xE9; representado atrav&#xE9;s de um&#xA0;Objeto e, por consequ&#xEA;ncia, n&#xE3;o possui m&#xE9;todos.\">tipos primitivos</a> do JavaScript.", "localization_tags": [], "locale": "pt-BR", "last_edit": "2015-02-15T15:36:33", "review_tags": []}, {"title": "undefined", "url": "/it/docs/Web/JavaScript/Reference/Global_Objects/undefined", "tags": [], "summary": "La variabile globale\u00a0<strong><code>undefined</code></strong>\u00a0rappresenta il valore primitivo\u00a0<span style=\"font-family: Consolas, Monaco, 'Andale Mono', monospace;\"><a href=\"/en-US/docs/Glossary/Undefined\" class=\"glossaryLink\" title=\"undefined: A primitive value automatically assigned to variables that have just been declared or to formal arguments for which there are no actual arguments.\">undefined</a></span>.\u00a0\u00c8 uno dei <a href=\"/en-US/docs/Glossary/Primitive\" class=\"glossaryLink\" title=\"valori primitivi: A primitive (primitive value, primitive data type) is data that is not an object and has no methods.\">valori primitivi</a> di JavaScript.", "localization_tags": [], "locale": "it", "last_edit": "2015-04-12T06:23:10", "review_tags": []}], "modified": "2015-12-25T07:36:11", "label": "undefined", "localization_tags": ["inprogress"], "url": "/ko/docs/Web/JavaScript/Reference/Global_Objects/undefined", "last_edit": "2015-12-25T07:36:05", "summary": "\uc804\uc5ed\u00a0<code><strong>undefined</strong></code> \ud504\ub85c\ud37c\ud2f0\ub294\u00a0<code><a class=\"glossaryLink\" href=\"/en-US/docs/Glossary/Undefined\" title=\"undefined: A primitive value automatically assigned to variables that have just been declared or to formal arguments for which there are no actual arguments.\">undefined</a> \uc6d0\uc2dc \uac12\uc5d0 \ud574\ub2f9\ud55c\ub2e4</code>. JavaScript \uc758\u00a0<a class=\"glossaryLink\" href=\"/en-US/docs/Glossary/Primitive\" title=\"&#xC6D0;&#xC2DC; &#xD0C0;&#xC785;: A primitive (primitive value, primitive data type) is data that is not an object and has no methods. In JavaScript, there are 6 primitive data types: string, number, boolean, null, undefined, symbol (new in ECMAScript 2015).\">\uc6d0\uc2dc \ud0c0\uc785</a> \uc911 \ud558\ub098\uc774\ub2e4.", "sections": [{"id": "Quick_Links", "title": null}, {"id": "\ubb38\ubc95", "title": "\ubb38\ubc95"}, {"id": "\uc124\uba85", "title": "\uc124\uba85"}, {"id": "\uc608\uc81c", "title": "\uc608\uc81c"}, {"id": "\uc5c4\uaca9\ud55c_\uade0\ub4f1()\uacfc_undefined", "title": "\uc5c4\uaca9\ud55c \uade0\ub4f1(===)\uacfc\u00a0"}, {"id": "typeof_\uc5f0\uc0b0\uc790\uc640_undefined", "title": null}, {"id": "void_\uc5f0\uc0b0\uc790\uc640_undefined", "title": null}, {"id": "\uba85\uc138\uc11c", "title": "\uba85\uc138\uc11c"}, {"id": "\ube0c\ub77c\uc6b0\uc800_\ud638\ud658\uc131", "title": "\ube0c\ub77c\uc6b0\uc800 \ud638\ud658\uc131"}], "id": 167079, "review_tags": []}