Skip to content

Add a note about frozen objects and v-for #297

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Merged
merged 1 commit into from
May 7, 2016
Merged

Add a note about frozen objects and v-for #297

Changes from all commits
Commits
Show all changes
1 commit
Select commit
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
4 changes: 4 additions & 0 deletions src/guide/list.md
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -223,6 +223,10 @@ You can just do:
this.items.$remove(item)
```

#### Using `Object.freeze()`

When iterating over an array of objects frozen with `Object.freeze()`, you need to explicitly use a `track-by` key. A warning will be displayed in this scenario when Vue.js is unable to track objects automatically.

## Object v-for

You can also use `v-for` to iterate through the properties of an Object. In addition to `$index`, each scope will have access to another special property `$key`.
Expand Down