{"ScriptPreparationCode":"var data = {};\r\nfor (var i = 0; i \u003C 10000; i\u002B\u002B) {\r\n data[\u0060a${i}\u0060] = i;\r\n}","TestCases":[{"Name":"for in loop","Code":"let hasKey = false;\r\n for (let key in data) {\r\n if (key === \u0027a998\u0027) {\r\n hasKey = true;\r\n }\r\n }","IsDeferred":false},{"Name":"Object.keys","Code":"const hasKey = Object.keys(data).includes(\u0027a998\u0027);","IsDeferred":false}]}