{"ScriptPreparationCode":"function getObj(i) {\r\n return {\r\n \u0027a\u0027: {\r\n id: \u0027a\u0027,\r\n num: 1\r\n },\r\n \u0027b\u0027: {\r\n id: \u0027b\u0027,\r\n num: 1\r\n },\r\n \u0027c\u0027: {\r\n id: \u0027c\u0027,\r\n num: 1\r\n },\r\n \u0027d\u0027: {\r\n id: \u0027d\u0027,\r\n num: 1\r\n },\r\n \u0027e\u0027: {\r\n id: \u0027e\u0027,\r\n num: 1\r\n },\r\n \u0027f\u0027: {\r\n id: \u0027f\u0027,\r\n num: 1\r\n },\r\n \u0027g\u0027: {\r\n id: \u0027g\u0027,\r\n num: 1\r\n },\r\n [i.toString()]: 1,\r\n };\r\n};","TestCases":[{"Name":"for-in","Code":"const r = [];\r\nfor (var i=10000; i \u003E 0; i--) {\r\n for (var key in getObj(i)) {\r\n r[i] = key;\r\n }\r\n}\r\nconsole.log(r.length)","IsDeferred":false},{"Name":"Object.keys","Code":"const r = [];\r\nfor (var i=10000; i \u003E 0; i--) {\r\n Object.keys(getObj(i)).forEach(key =\u003E { r[i] = key; });\r\n}\r\nconsole.log(r.length)","IsDeferred":false}]}