回答編集履歴
1
chousei
answer
CHANGED
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@@ -15,4 +15,19 @@
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15
15
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const l2=JSON.parse(JSON.sringify(listMember))[1];
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16
16
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l2.title="200";
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17
17
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console.dir(listMember);//listMemberに影響はない
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18
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+
```
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19
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+
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20
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# 再確認用
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21
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```javascript
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22
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const listMember = [
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23
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{ title: '1' },
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24
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{ title: '2' },
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25
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{ title: '3' },
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26
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];
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27
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const l1=listMember[0];
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28
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const l2=JSON.parse(JSON.stringify(listMember));
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29
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l1.title="100";
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30
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console.dir(listMember);//listMemberにさかのぼって変更
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31
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l2[1].title="200";
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32
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console.dir(l2);//listMemberに影響はない
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18
33
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```
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