fix(core - patch)：when before patch: old keys like [a, b, c ...] new …#13112
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sam0212 wants to merge 1 commit intovuejs:mainfrom
Open
fix(core - patch)：when before patch: old keys like [a, b, c ...] new …#13112sam0212 wants to merge 1 commit intovuejs:mainfrom
sam0212 wants to merge 1 commit intovuejs:mainfrom
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…keys like [d, b, b, e, ....], when patch the second key "b" Vnode by new children, the vnodeToMove will be undefined, so need add a condition for vnodeToMove fix an error when diff patch, when before patch: old keys like [a, b, c ...] new keys like [d, b, b, e, ....], when patch the second key "b" Vnode by new children, the vnodeToMove will be undefined, so need add a condition for vnodeToMove
Author
// PatchChild.vue
<template>
<div>
{{ data.key }}
</div>
</template>
<script>
export default {
props: {
data: {
type: Object,
required: true,
},
},
};
</script>// Wrapper.vue
<template>
<div>
<div>
<PatchChild v-for="item in list" :key="item.key" :data="item" />
</div>
<div><button @click="changeList">changeList</button></div>
</div>
</template>
<script>
import PatchChild from './PatchChild.vue';
export default {
components: {
PatchChild,
},
data() {
return {
list: [
{
key: 'A',
},
{
key: 'B',
},
{
key: 'C',
},
],
};
},
methods: {
changeList() {
this.list = [
{
key: 'D',
},
{
key: 'B',
},
{
key: 'B',
},
{
key: 'E',
},
];
},
},
};
</script> |
Member
|
Keys cannot be repeated. Normally there is already an error for this but this shouldn’t be « fixed ». It’s supposed not to work |
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…keys like [d, b, b, e, ....], when patch the second key "b" Vnode by new children, the vnodeToMove will be undefined, so need add a condition for vnodeToMove
fix an error when diff patch, when before patch: old keys like [a, b, c ...] new keys like [d, b, b, e, ....], when patch the second key "b" Vnode by new children, the vnodeToMove will be undefined, so need add a condition for vnodeToMove
What kind of change does this PR introduce? (check at least one)
Does this PR introduce a breaking change? (check one)
If yes, please describe the impact and migration path for existing applications:
The PR fulfills these requirements:
mainbranch for v2.x (or to a previous version branch)fix #xxx[,#xxx], where "xxx" is the issue number)If adding a new feature, the PR's description includes:
Other information: