jeena/en.javascript.info
1
0
Fork 0
Code Issues Pull requests Projects Packages Wiki Activity Actions

Update article.md

Browse source
This commit is contained in:
LeviDing 2020-07-18 23:32:51 +08:00 • committed by GitHub
parent ae1171069c
commit c2f8c4fb9e
No known key found for this signature in database
GPG key ID: 4AEE18F83AFDEB23
1 changed files with 1 additions and 1 deletions
Download patch file Download diff file Expand all files Collapse all files

2
1-js/04-object-basics/07-optional-chaining/article.md
View file

@ -80,7 +80,7 @@ If there's no variable `user` at all, then `user?.anything` triggers an error:
// ReferenceError: user is not defined // ReferenceError: user is not defined
user?.address; user?.address;
``` ```
There must be `let/const/var user`. The optional chaining works only for declared variables. There must be `let/const/var user`. The optional chaining works only for declared variables.
```` ````
## Short-circuiting ## Short-circuiting