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This commit is contained in:
Ilya Kantor 2019-06-20 16:16:45 +03:00
parent eeee9fedf7
commit 7697f95e24
4 changed files with 41 additions and 38 deletions
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10
1-js/04-object-basics/04-object-methods/2-check-syntax/solution.md
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@ -15,13 +15,13 @@ The error message in most browsers does not give understanding what went wrong.
**The error appears because a semicolon is missing after `user = {...}`.**
JavaScript does not assume a semicolon before a bracket `(user.go)()`, so it reads the code like:
JavaScript does not auto-insert a semicolon before a bracket `(user.go)()`, so it reads the code like:
```js no-beautify
let user = { go:... }(user.go)()
```
Then we can also see that such a joint expression is syntactically a call of the object `{ go: ... }` as a function with the argument `(user.go)`. And that also happens on the same line with `let user`, so the `user` object has not yet even been defined, hence the error.
Then we can also see that such a joint expression is syntactically a call of the object `{ go: ... }` as a function with the argument `(user.go)`. And that also happens on the same line with `let user`, so the `user` object has not yet even been defined, hence the error.
If we insert the semicolon, all is fine:
@ -35,9 +35,3 @@ let user = {
```
Please note that brackets around `(user.go)` do nothing here. Usually they setup the order of operations, but here the dot `.` works first anyway, so there's no effect. Only the semicolon thing matters.