{"json_modified": "2016-03-28T08:41:12.733890", "uuid": "98837de8-2943-4860-9ef9-7ffbf755fd37", "title": "handler.preventExtensions()", "url": "/en-US/docs/Web/JavaScript/Reference/Global_Objects/Proxy/handler/preventExtensions", "tags": ["Proxy", "ECMAScript6", "Method", "JavaScript"], "translations": [{"uuid": "3e83b1a0-2f3c-41d7-af45-4cb5ff476a46", "title": "handler.preventExtensions()", "url": "/fr/docs/Web/JavaScript/Reference/Objets_globaux/Proxy/handler/preventExtensions", "tags": ["Proxy", "R\u00e9f\u00e9rence", "JavaScript", "ECMAScript6", "M\u00e9thode"], "summary": "La m\u00e9thode <strong><code>handler.preventExtensions()</code></strong> est une trappe pour <a href=\"/fr/docs/Web/JavaScript/Reference/Objets_globaux/Object/preventExtensions\" title=\"La m&#xE9;thode Object.preventExtensions() permet d'emp&#xEA;cher l'ajout de nouvelles propri&#xE9;t&#xE9;s &#xE0; un objet (i.e. d'&#xE9;tendre l'objet gr&#xE2;ce &#xE0; de nouvelles caract&#xE9;ristiques).\"><code>Object.preventExtensions()</code></a>.", "localization_tags": [], "locale": "fr", "last_edit": "2016-01-04T12:23:33", "review_tags": []}, {"uuid": "62da5d07-4b58-44a0-b862-a680c807a49c", "title": "handler.preventExtensions()", "url": "/ja/docs/Web/JavaScript/Reference/Global_Objects/Proxy/handler/preventExtensions", "tags": ["Experimental", "Proxy", "Exp\u00e9rimental", "JavaScript", "ECMAScript6", "Method"], "summary": "<a href=\"/ja/docs/Web/JavaScript/Reference/Global_Objects/Object/preventExtensions\" title=\"&#x3059;&#x3067;&#x306B;&#x30D7;&#x30ED;&#x30D1;&#x30C6;&#x30A3;&#x304C;&#x8FFD;&#x52A0;&#x3055;&#x308C;&#x305F;&#x30AA;&#x30D6;&#x30B8;&#x30A7;&#x30AF;&#x30C8;&#x3067;&#x3001;&#x65B0;&#x3057;&#x3044;&#x30D7;&#x30ED;&#x30D1;&#x30C6;&#x30A3;&#x3092;&#x6291;&#x5236;&#x3057;&#x307E;&#x3059; (&#x3059;&#x306A;&#x308F;&#x3061;&#x3001;&#x30AA;&#x30D6;&#x30B8;&#x30A7;&#x30AF;&#x30C8;&#x306E;&#x3055;&#x3089;&#x306A;&#x308B;&#x62E1;&#x5F35;&#x3092;&#x6291;&#x5236;&#x3057;&#x307E;&#x3059;)&#x3002;\"><code>Object.preventExtensions()</code></a>\u306b\u5bfe\u3059\u308b\u30c8\u30e9\u30c3\u30d7\u3067\u3059\u3002", "localization_tags": ["inprogress"], "locale": "ja", "last_edit": "2015-06-21T09:10:28", "review_tags": ["editorial"]}], "modified": "2016-03-02T18:05:02", "label": "handler.preventExtensions()", "localization_tags": [], "locale": "en-US", "id": 133037, "last_edit": "2016-01-04T04:31:15", "summary": "The <strong><code>handler.preventExtensions()</code></strong> method is a trap for <a href=\"/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/preventExtensions\" title=\"The Object.preventExtensions() method prevents new properties from ever being added to an object (i.e. prevents future extensions to the object).\"><code>Object.preventExtensions()</code></a>.", "sections": [{"id": "Quick_Links", "title": null}, {"id": "Syntax", "title": "Syntax"}, {"id": "Parameters", "title": "Parameters"}, {"id": "Return_value", "title": "Return value"}, {"id": "Description", "title": "Description"}, {"id": "Interceptions", "title": "Interceptions"}, {"id": "Invariants", "title": "Invariants"}, {"id": "Examples", "title": "Examples"}, {"id": "Specifications", "title": "Specifications"}, {"id": "Browser_compatibility", "title": "Browser compatibility"}, {"id": "See_also", "title": "See also"}], "slug": "Web/JavaScript/Reference/Global_Objects/Proxy/handler/preventExtensions", "review_tags": []}