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fix: typo in 1-js/04-object-basics/07-optional-chaining/article.md #1069

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Merged
leviding merged 1 commit into from
Jul 1, 2022
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fix: typo in 1-js/04-object-basics/07-optional-chaining/article.md #1069

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2 changes: 1 addition & 1 deletion 1-js/04-object-basics/07-optional-chaining/article.md
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Expand Up @@ -180,7 +180,7 @@ userGuest.admin?.(); // 啥都没发生（没有这样的方法）
*/!*
```

在这两行代码中，我们首先使用点符号（`userAdmin.admin`）来获取 `admin` 属性，因为我们假定对象 `userAdmain` 存在，因此可以安全地读取它。
在这两行代码中，我们首先使用点符号（`userAdmin.admin`）来获取 `admin` 属性，因为我们假定对象 `userAdmin` 存在，因此可以安全地读取它。

然后 `?.()` 会检查它左边的部分：如果 `admin` 函数存在，那么就调用运行它（对于 `userAdmin`）。否则（对于 `userGuest`）运算停止，没有报错。

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