{"ScriptPreparationCode":null,"TestCases":[{"Name":"a","Code":"var target = {};\r\nvar key = \u0027something\u0027;\r\n\r\nfor (var i=0; i\u003C1000; i\u002B\u002B) {\r\n Object.defineProperty(target, key\u002Bi, {\r\n get: function() {return _val;},\r\n set: function(v) { target._v = v},\r\n });\r\n}","IsDeferred":false},{"Name":"b","Code":"var target = {};\r\nvar key = \u0027something\u0027;\r\n\r\nfor (var i=0; i\u003C1000; i\u002B\u002B) {\r\n target[key\u002B1] = undefined;\r\n}","IsDeferred":false}]}