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The page should've rendered without Vue.js throwing an error.
More Info
I'm working on a small app, which has a two-level hierarchy of items. If an item contains subitems, it is rendered as a group and the contained items are rendered recursively. Thus, a group and an item result into different HTML being rendered (and different directives in the elements).
Now, if I replace a group with an item using splice, the virtual dom doesn't notice that the HTML element changed (with its directives), but tries to update the items directives with group's.
The text was updated successfully, but these errors were encountered:
It is recommended to provide a key with v-for whenever possible, unless the iterated DOM content is simple, or you are intentionally relying on the default behavior for performance gains.
But I think this may nonetheless be considered a bug. /ping @yyx990803
Thanks for the fast reply! I somehow missed key attribute, when learning Vue and v-for has worked so nicely without it.
After submitting the issue, I noticed that you can also work around the bug just by changing the element name of either of the v-ifs in the reproduction example.
Vue.js version
2.0.1
Reproduction Link
http://jsfiddle.net/5sH6A/723/
Steps to Reproduce
Click "remove" next to "2".
Expected Result
The page should've rendered without Vue.js throwing an error.
More Info
I'm working on a small app, which has a two-level hierarchy of items. If an item contains subitems, it is rendered as a group and the contained items are rendered recursively. Thus, a group and an item result into different HTML being rendered (and different directives in the elements).
Now, if I replace a group with an item using splice, the virtual dom doesn't notice that the HTML element changed (with its directives), but tries to update the items directives with group's.
The text was updated successfully, but these errors were encountered: