オブジェクトJavaScriptの配列からの上位n個の最大値

たとえば、次のようなオブジェクトの配列があります-

const arr = [
   {"id":0,"start":0,"duration":117,"slide":4,"view":0},
   {"id":0,"start":0,"duration":12,"slide":1,"view":0},
   {"id":0,"start":0,"duration":41,"slide":2,"view":0},
   {"id":0,"start":0,"duration":29,"slide":3,"view":0},
   {"id":0,"start":0,"duration":123,"slide":3,"view":0},
   {"id":0,"start":0,"duration":417,"slide":2,"view":0},
   {"id":0,"start":0,"duration":12,"slide":1,"view":0},
   {"id":0,"start":0,"duration":67,"slide":2,"view":0}
];

この配列を取り込んで、配列の上位n個の要素を別の配列に返す関数を作成する必要があります（topは、期間の値が最も高いオブジェクトを意味します）。

したがって、この問題のコードを書いてみましょう-

例

const arr = [
   {"id":0,"start":0,"duration":117,"slide":4,"view":0},
   {"id":0,"start":0,"duration":12,"slide":1,"view":0},
   {"id":0,"start":0,"duration":41,"slide":2,"view":0},
   {"id":0,"start":0,"duration":29,"slide":3,"view":0},
   {"id":0,"start":0,"duration":123,"slide":3,"view":0},
   {"id":0,"start":0,"duration":417,"slide":2,"view":0},
   {"id":0,"start":0,"duration":12,"slide":1,"view":0},
   {"id":0,"start":0,"duration":67,"slide":2,"view":0}
];
const topN = (arr, n) => {
   if(n > arr.length){
      return false;
   }
   return arr
   .slice()
   .sort((a, b) => {
      return b.duration - a.duration
   })
   .slice(0, n);
};
console.log(topN(arr, 3));
console.log(topN(arr, 4));
console.log(topN(arr, 5));

出力

コンソールの出力は-

[
   { id: 0, start: 0, duration: 417, slide: 2, view: 0 },
   { id: 0, start: 0, duration: 123, slide: 3, view: 0 },
   { id: 0, start: 0, duration: 117, slide: 4, view: 0 }
]
[
   { id: 0, start: 0, duration: 417, slide: 2, view: 0 },
   { id: 0, start: 0, duration: 123, slide: 3, view: 0 },
   { id: 0, start: 0, duration: 117, slide: 4, view: 0 },
   { id: 0, start: 0, duration: 67, slide: 2, view: 0 }
]
[
   { id: 0, start: 0, duration: 417, slide: 2, view: 0 },
   { id: 0, start: 0, duration: 123, slide: 3, view: 0 },
   { id: 0, start: 0, duration: 117, slide: 4, view: 0 },
   { id: 0, start: 0, duration: 67, slide: 2, view: 0 },
   { id: 0, start: 0, duration: 41, slide: 2, view: 0 }
]