{"ScriptPreparationCode":"var arr = new Array(15000);\r\narr.fill({\r\n id: 0\r\n});\r\narr = arr.map((el, idx) =\u003E ({\r\n id: idx\r\n}));\r\n\r\nvar foo = {\r\n id: Math.floor(Math.random() * 15000)\r\n};","TestCases":[{"Name":"findIndex","Code":"var index = arr.findIndex((el) =\u003E el.id === foo.id);","IsDeferred":false},{"Name":"indexOf","Code":"var index = arr.indexOf(foo);","IsDeferred":false}]}