{"ScriptPreparationCode":"var obj = {};\r\nfor(let i = 0; i \u003C 100000; i\u002B\u002B) {\r\n obj[i] = i;\r\n};\r\n","TestCases":[{"Name":"for in","Code":"for (var key in obj) {\r\n console.log(key); \r\n }","IsDeferred":false},{"Name":"object.keys","Code":"Object.keys(obj).forEach(key =\u003E console.log(key));","IsDeferred":false}]}