回答編集履歴
3
補足の追加。
test
CHANGED
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@@ -1,16 +1,16 @@
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1
1
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```JavaScript
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2
2
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3
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-
function inArrayKeys( arr, keys ) {
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3
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+
function inArrayKeys( arr, keys ) { // ← 指摘いただき、関数名をinから修正
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4
4
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5
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return arr.filter( ( ele )=> { return keys.includes( ele ) } ).length === keys.length;
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6
6
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7
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}
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8
8
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9
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-
console.log( inArrayKeys( [ 1, 2, 3, 4, 5 ], [ 1, 2 ]) ); // B
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9
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console.log( inArrayKeys( [ 1, 2, 3, 4, 5 ], [ 1, 2 ]) ); // B ← 指摘いただき、関数名をinから修正
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10
10
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11
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-
console.log( inArrayKeys( [ 1, 3, 4, 5 ], [ 1, 2 ]) ); // C
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11
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console.log( inArrayKeys( [ 1, 3, 4, 5 ], [ 1, 2 ]) ); // C ← 指摘いただき、関数名をinから修正
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12
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console.log( inArrayKeys( [ 1, 3, 4, 2 ], [ 1, 2 ]) ); // D
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console.log( inArrayKeys( [ 1, 3, 4, 2 ], [ 1, 2 ]) ); // D ← 指摘いただき、関数名をinから修正
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14
14
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15
15
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```
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16
16
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2
情報の追加。
test
CHANGED
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@@ -13,3 +13,37 @@
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13
13
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console.log( inArrayKeys( [ 1, 3, 4, 2 ], [ 1, 2 ]) ); // D
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14
14
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15
15
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```
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16
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+
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17
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18
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19
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---
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20
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21
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22
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23
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**追記：**
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24
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25
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+
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26
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27
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正解はコメント欄に書かれたコードをごらんあれ。書き直そうとして失敗したコードを自戒のため記録。
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28
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+
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29
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+
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30
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31
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```JavaScript
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32
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+
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33
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function inArrayKeys( arr, keys ) {
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34
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+
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35
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return JSON.stringify( arr.filter( ( ele )=> { return keys.includes( ele ) } ).sort() ) === JSON.stringify( keys.sort() );
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36
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37
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}
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38
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39
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console.log( inArrayKeys( [ 1, 2, 3, 4, 5 ], [ 1, 2 ]) ); // B
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40
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41
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console.log( inArrayKeys( [ 1, 3, 4, 5 ], [ 1, 2 ]) ); // C
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42
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43
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console.log( inArrayKeys( [ 1, 3, 4, 2 ], [ 1, 2 ]) ); // D
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44
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45
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//x console.log( inArrayKeys( [ 1, 1, 3, 4, 2 ], [ 1, 2 ]) ); // [ 1, 1, 2 ] [ 1, 2 ]なので失敗する
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46
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+
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47
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```
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48
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49
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1
ミスがあったため修正。
test
CHANGED
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@@ -1,15 +1,15 @@
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1
1
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```JavaScript
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2
2
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3
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-
function in( arr, keys ) {
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3
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+
function inArrayKeys( arr, keys ) {
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4
4
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5
5
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return arr.filter( ( ele )=> { return keys.includes( ele ) } ).length === keys.length;
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6
6
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7
7
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}
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8
8
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9
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console.log( in( [ 1, 2, 3, 4, 5 ], [ 1, 2 ]) ); // B
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9
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console.log( inArrayKeys( [ 1, 2, 3, 4, 5 ], [ 1, 2 ]) ); // B
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10
10
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11
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console.log( in( [ 1, 3, 4, 5 ], [ 1, 2 ]) ); // C
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11
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console.log( inArrayKeys( [ 1, 3, 4, 5 ], [ 1, 2 ]) ); // C
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12
12
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13
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console.log( in( [ 1, 3, 4, 2 ], [ 1, 2 ]) ); // D
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13
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console.log( inArrayKeys( [ 1, 3, 4, 2 ], [ 1, 2 ]) ); // D
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14
14
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15
15
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```
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