{"ScriptPreparationCode":"var obj = new Object()\r\nvar keys = (new Array(10000)).fill(0).map((x, i) =\u003E { return i \u002B 1 })\r\nkeys.forEach((x) =\u003E { obj[\u0027prop\u0027 \u002B x] = x })","TestCases":[{"Name":"For In","Code":"var sum = 0\r\nfor (var key in obj) {\r\n sum\u002B\u002B\r\n}","IsDeferred":false},{"Name":"Object keys forEach","Code":"var sum = 0\r\nObject.keys(obj).forEach(val =\u003E { sum\u002B\u002B })","IsDeferred":false}]}