Skip to content

fix: Add "boolean" and "symbol" types for "key" attribute. #2614

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
Jun 8, 2020
+1 −1
Merged

fix: Add "boolean" and "symbol" types for "key" attribute. #2614

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
2 changes: 1 addition & 1 deletion src/v2/api/index.md
View file
Original file line number Diff line number Diff line change
@@ -2379,7 +2379,7 @@ type: api

### key

- **Expects:** `number | string`
- **Expects:** `number | string | boolean (since 2.4.2) | symbol (since 2.5.12)`

The `key` special attribute is primarily used as a hint for Vue's virtual DOM algorithm to identify VNodes when diffing the new list of nodes against the old list. Without keys, Vue uses an algorithm that minimizes element movement and tries to patch/reuse elements of the same type in-place as much as possible. With keys, it will reorder elements based on the order change of keys, and elements with keys that are no longer present will always be removed/destroyed.