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トップECMAScriptに関する質問配列の並べ替えおよび後ろに送る方法

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3

\[\]\.concatは不要だった

2017/01/31 08:15

投稿

turbgraphics200
turbgraphics200

スコア4267

test CHANGED
@@ -6,7 +6,7 @@
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  let arr = [...Array(11).keys()]; // [0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10];
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- let result = [].concat(arr.filter(v => v >= threshold), arr.filter(v => v < threshold));
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+ let result = arr.filter(v => v >= threshold).concat(arr.filter(v => v < threshold)));
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  console.log(result);
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2

10が抜けてた

2017/01/31 08:15

投稿

turbgraphics200
turbgraphics200

スコア4267

test CHANGED
@@ -10,6 +10,6 @@
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  console.log(result);
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- // [4, 5, 6, 7, 8, 9, 0, 1, 2, 3]
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+ // [4, 5, 6, 7, 8, 9, 10, 0, 1, 2, 3]
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  ```

1

ES6に

2017/01/31 08:13

投稿

turbgraphics200
turbgraphics200

スコア4267

test CHANGED
@@ -2,11 +2,11 @@
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  ```js
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- var threshold = 4;
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+ const threshold = 4;
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- var arr = [...Array(11).keys()]; // [0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10];
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+ let arr = [...Array(11).keys()]; // [0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10];
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- var result = [].concat(arr.filter(v => v >= threshold), arr.filter(v => v < threshold));
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+ let result = [].concat(arr.filter(v => v >= threshold), arr.filter(v => v < threshold));
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  console.log(result);
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