{"json_modified": "2016-10-04T23:27:45.900792", "uuid": "b6968246-fcb9-433d-8553-3fdb00f32e03", "title": "FormData.keys()", "url": "/en-US/docs/Web/API/FormData/keys", "tags": ["API", "Reference", "FormData", "XMLHttpRequest API", "Iterator", "Method"], "translations": [], "modified": "2016-10-04T23:27:46", "label": "FormData.keys()", "localization_tags": [], "locale": "en-US", "id": 168287, "last_edit": "2016-10-04T23:27:40", "summary": "The <code><strong>FormData.keys()</strong></code> method returns an <a href=\"/en-US/docs/Web/JavaScript/Reference/Iteration_protocols\" title=\"A couple of additions to ECMAScript 2015 (ES6) aren't new built-ins or syntax, but protocols. These protocols can be implemented by any object respecting some conventions.\"><code>iterator</code></a> allowing to go through all keys contained in this object. The keys are <a href=\"/en-US/docs/Web/API/USVString\" title=\"USVString corresponds to the set of all possible sequences of unicode scalar values. USVString maps to a String when returned in JavaScript; it's generally only used for APIs that perform text processing and need a string of unicode scalar values to operate on.\"><code>USVString</code></a> objects.", "sections": [{"id": "Quick_Links", "title": null}, {"id": "Syntax", "title": "Syntax"}, {"id": "Return_value", "title": "Return value"}, {"id": "Example", "title": "Example"}, {"id": "Specifications", "title": "Specifications"}, {"id": "Browser_compatibility", "title": "Browser compatibility"}, {"id": "See_also", "title": "See also"}], "slug": "Web/API/FormData/keys", "review_tags": []}