{"json_modified": "2016-10-21T01:14:53.045157", "uuid": "3ab6ad58-9327-4ac6-b071-e14188d6ad0e", "title": "Default parameters", "url": "/en-US/docs/Web/JavaScript/Reference/Functions/Default_parameters", "tags": ["ECMAScript6", "Functions", "JavaScript"], "translations": [{"uuid": "f7c43391-a69d-40f7-a124-af4c79975433", "title": "Par\u00e1metros por defecto", "url": "/es/docs/Web/JavaScript/Referencia/Funciones/Parametros_por_defecto", "tags": [], "summary": "Los\u00a0<strong>par\u00e1metros por defecto de una funci\u00f3n</strong>\u00a0permiten que los par\u00e1metros formales de la funci\u00f3n sean inicializados con valores por defecto si no se pasan valores o los valores pasados son <code>undefined</code>.", "localization_tags": ["inprogress"], "locale": "es", "last_edit": "2015-10-10T08:56:18", "review_tags": []}, {"uuid": "d6fcde95-c9af-4b88-b46e-56bd38d30615", "title": "Valeurs par d\u00e9faut des arguments", "url": "/fr/docs/Web/JavaScript/Reference/Fonctions/Valeurs_par_d%C3%A9faut_des_arguments", "tags": ["R\u00e9f\u00e9rence", "ECMAScript6", "Fonctions", "JavaScript"], "summary": "Cette syntaxe permet d'initialiser des param\u00e8tres lors de l'appel de la fonction si aucune valeur n'est pass\u00e9e\u00a0ou si c'est la valeur <a href=\"/fr/docs/Web/JavaScript/Reference/Objets_globaux/undefined\" title=\"La propri&#xE9;t&#xE9; globale undefined repr&#xE9;sente la valeur undefined. Cette valeur est l'un des types primitifs de JavaScript.\"><code>undefined</code></a> qui est pass\u00e9e.", "localization_tags": [], "locale": "fr", "last_edit": "2016-09-05T03:47:41", "review_tags": []}, {"uuid": "741d03c2-9ad2-43e0-9105-06d0419246c3", "title": "\u30c7\u30d5\u30a9\u30eb\u30c8\u5f15\u6570", "url": "/ja/docs/Web/JavaScript/Reference/Functions_and_function_scope/Default_parameters", "tags": ["ECMAScript6", "Functions", "JavaScript"], "summary": "<strong>\u95a2\u6570\u306e\u30c7\u30d5\u30a9\u30eb\u30c8\u5f15\u6570</strong> \u306f\u3001\u95a2\u6570\u306b\u5024\u304c\u6e21\u3055\u308c\u306a\u3044\u5834\u5408\u3084 <code>undefined</code> \u304c\u6e21\u3055\u308c\u308b\u5834\u5408\u306b\u3001\u30c7\u30d5\u30a9\u30eb\u30c8\u5024\u3067\u521d\u671f\u5316\u3055\u308c\u308b\u5f62\u5f0f\u4e0a\u306e\u5f15\u6570\u3092\u6307\u5b9a\u3067\u304d\u307e\u3059\u3002", "localization_tags": [], "locale": "ja", "last_edit": "2016-08-18T07:04:00", "review_tags": []}, {"uuid": "f53982ba-45ac-4bea-aef8-6e346aa30c35", "title": "\uae30\ubcf8 \ub9e4\uac1c\ubcc0\uc218", "url": "/ko/docs/Web/JavaScript/Reference/Functions/Default_parameters", "tags": ["ECMAScript6", "Functions", "JavaScript"], "summary": "\uae30\ubcf8 \ud568\uc218 \ub9e4\uac1c\ubcc0\uc218(<strong>default function parameter</strong>)\ub294 \uac74\ub124\uc9c4 \uac12\uc774 \uc5c6\uac70\ub098 <code>undefined</code>\uac00 \uc804\ub2ec\ub41c \uacbd\uc6b0 \ud615\uc2dd \ub9e4\uac1c\ubcc0\uc218\ub97c \uae30\ubcf8\uac12\uc73c\ub85c \ucd08\uae30\ud654\ub418\uac8c \ud569\ub2c8\ub2e4.", "localization_tags": [], "locale": "ko", "last_edit": "2016-07-20T07:27:37", "review_tags": []}, {"uuid": "2e25e53b-114f-4b75-82b6-796094d86aa8", "title": "Par\u00e2metros Predefinidos", "url": "/pt-BR/docs/Web/JavaScript/Reference/Functions/Parametros_Predefinidos", "tags": ["ECMA2015", "Functions", "Fun\u00e7\u00e3o", "Fun\u00e7\u00f5es", "JavaScript", "ECMAScript6", "Function"], "summary": "<strong>Os par\u00e2metros predefinidos de uma fun\u00e7\u00e3o</strong> permitem que par\u00e2metros regulares sejam inicializados com com valores iniciais caso undefined ou nenhum valor seja passado.", "localization_tags": ["inprogress"], "locale": "pt-BR", "last_edit": "2016-04-30T19:36:27", "review_tags": ["editorial"]}, {"uuid": "34f4e890-791f-40a8-a8f3-3b9653694f60", "title": "\u041f\u0430\u0440\u0430\u043c\u0435\u0442\u0440\u044b \u043f\u043e \u0443\u043c\u043e\u043b\u0447\u0430\u043d\u0438\u044e", "url": "/ru/docs/Web/JavaScript/Reference/Functions/Default_parameters", "tags": ["ECMAScript6", "\u042d\u043a\u0441\u043f\u0435\u0440\u0438\u043c\u0435\u043d\u0442\u0430\u043b\u044c\u043d\u044b\u0439", "\u0424\u0443\u043d\u043a\u0446\u0438\u0438", "JavaScript"], "summary": "<strong>\u041f\u0430\u0440\u0430\u043c\u0435\u0442\u0440\u044b \u043f\u043e \u0443\u043c\u043e\u043b\u0447\u0430\u043d\u0438\u044e</strong>\u00a0\u043f\u043e\u0437\u0432\u043e\u043b\u044f\u044e\u0442 \u0437\u0430\u0434\u0430\u0432\u0430\u0442\u044c \u0444\u043e\u0440\u043c\u0430\u043b\u044c\u043d\u044b\u043c \u043f\u0430\u0440\u0430\u043c\u0435\u0442\u0440\u0430\u043c \u0444\u0443\u043d\u043a\u0446\u0438\u0438 \u0437\u043d\u0430\u0447\u0435\u043d\u0438\u044f \u043f\u043e \u0443\u043c\u043e\u043b\u0447\u0430\u043d\u0438\u044e, \u0435\u0441\u043b\u0438 \u0434\u043b\u044f \u043d\u0438\u0445 \u043d\u0435 \u0443\u043a\u0430\u0437\u0430\u043d\u043e \u0437\u043d\u0430\u0447\u0435\u043d\u0438\u0435 \u0438\u043b\u0438 \u043f\u0435\u0440\u0435\u0434\u0430\u043d\u00a0<code>undefined</code>.", "localization_tags": [], "locale": "ru", "last_edit": "2016-01-14T07:02:39", "review_tags": ["editorial"]}, {"uuid": "4dabd448-8fe0-41d3-86ac-0a97bd1e5338", "title": "\u9ed8\u8ba4\u53c2\u6570\u503c", "url": "/zh-CN/docs/Web/JavaScript/Reference/Functions/Default_parameters", "tags": ["\u51fd\u6570", "ECMAScript6", "ES6", "JavaScript"], "summary": "\u5982\u679c\u4e00\u4e2a\u5f62\u53c2\u6ca1\u6709\u88ab\u4f20\u5165\u5bf9\u5e94\u7684\u5b9e\u53c2\u6216\u8005\u4f20\u5165\u4e86<code>undefined</code>,\u5219\u8be5\u5f62\u53c2\u4f1a\u88ab\u8d4b\u4e00\u4e2a\u9ed8\u8ba4\u503c.", "localization_tags": ["inprogress"], "locale": "zh-CN", "last_edit": "2016-10-21T01:14:38", "review_tags": []}], "modified": "2016-09-01T09:47:54", "label": "Default parameters", "localization_tags": [], "locale": "en-US", "id": 47597, "last_edit": "2016-09-01T09:47:44", "summary": "<strong>Default function parameters</strong> allow formal parameters to be initialized with default values if no value or <code>undefined</code> is passed.", "sections": [{"id": "Quick_Links", "title": null}, {"id": "Syntax", "title": "Syntax"}, {"id": "Description", "title": "Description"}, {"id": "Examples", "title": "Examples"}, {"id": "Passing_undefined", "title": "Passing "}, {"id": "Evaluated_at_call_time", "title": "Evaluated at call time"}, {"id": "Default_parameters_are_available_to_later_default_parameters", "title": "Default parameters are available to later default parameters"}, {"id": "Functions_defined_inside_function_body", "title": "Functions defined inside function body"}, {"id": "Parameters_without_defaults_after_default_parameters", "title": "Parameters without defaults after default parameters"}, {"id": "Destructured_parameter_with_default_value_assignment", "title": "Destructured parameter with default value assignment"}, {"id": "Specifications", "title": "Specifications"}, {"id": "Browser_compatibility", "title": "Browser compatibility"}, {"id": "See_also", "title": "See also"}], "slug": "Web/JavaScript/Reference/Functions/Default_parameters", "review_tags": []}