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minor fixes

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Violet Bora Lee 2020-05-05 22:27:01 +09:00
parent c2ce2d4cbd
commit b4910970c2
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1-js/04-object-basics/07-optional-chaining/article.md
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@ -3,7 +3,7 @@
[recent browser="new"]
The optional chaining `?.` is an error-prone way to access nested object properties, even if an intermediate property doesn't exist.
The optional chaining `?.` is an error-proof way to access nested object properties, even if an intermediate property doesn't exist.
## The problem
@ -40,7 +40,7 @@ AND'ing the whole path to the property ensures that all components exist, but is
The optional chaining `?.` stops the evaluation and returns `undefined` if the part before `?.` is `undefined` or `null`.
Further in this article, for brewity, we'll be saying that something "exists" if it's not `null` and not `undefined`.
Further in this article, for brevity, we'll be saying that something "exists" if it's not `null` and not `undefined`.
Here's the safe way to access `user.address.street`: