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Fix typo

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GabrieleC 2020-05-23 20:37:30 +02:00 • committed by GitHub
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1-js/04-object-basics/07-optional-chaining/article.md
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@ -124,7 +124,7 @@ user2.admin?.();
Here, in both lines we first use the dot `.` to get `admin` property, because the user object must exist, so it's safe read from it. Here, in both lines we first use the dot `.` to get `admin` property, because the user object must exist, so it's safe read from it.
Then `?.()` checks the left part: if the user exists, then it runs (for `user1`). Otherwise (for `user2`) the evaluation stops without errors. Then `?.()` checks the left part: if the admin function exists, then it runs (for `user1`). Otherwise (for `user2`) the evaluation stops without errors.
The `?.[]` syntax also works, if we'd like to use brackets `[]` to access properties instead of dot `.`. Similar to previous cases, it allows to safely read a property from an object that may not exist. The `?.[]` syntax also works, if we'd like to use brackets `[]` to access properties instead of dot `.`. Similar to previous cases, it allows to safely read a property from an object that may not exist.