回答編集履歴
1
&& obj はよくみたら不要
test
CHANGED
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@@ -16,6 +16,6 @@
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16
16
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17
17
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const st = new Set();
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18
18
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objA.forEach(obj => st.add(obj.age));
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19
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-
const ret = objB.filter(obj => st.has(obj.age)
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19
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+
const ret = objB.filter(obj => st.has(obj.age));
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20
20
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console.log(ret);
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21
21
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```
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