![有键]( "有键")
本文介绍了过渡组孩子必须有键……但他们是有键的的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
尝试在我的组件模板中使用
[Vue 警告]:孩子必须被键入:<div>
但我很确定它们是有键的.
//jsVue.component('仪器', {模板:`<transition-group name="fade"><div class="instruments"><div class="instrument" v-for="(instrument, index) in filtersInstruments" v-bind:key="index"><img v-bind:src="instrument.photo"><span class="name">{{ instrument.name }}</span><span class="construction">{{ instrument.top }}/{{ instrument.backAndSides }}</span><span class="price">$ {{ instrument.price }}</span>
</transition-group>`}
我认为设置 v-bind:key="index" 会满足这一点，但我得到了上面粘贴的错误.
解决方案
如果你不想给 .instruments 一个键，你可以删除那个元素并分配一个 tag 和 class 属性改为
这样，警告就不会再出现了，因为直接子项 (.instrument) 已分配给他们唯一的键.
Trying to use <animation-group> in my component template, but getting error:
[Vue warn]: <transition-group> children must be keyed: <div>
But I'm pretty sure that they are keyed.
//js
Vue.component('instruments', {
template: `
<transition-group name="fade">
<div class="instruments">
<div class="instrument" v-for="(instrument, index) in filteredInstruments" v-bind:key="index">
<img v-bind:src="instrument.photo">
<span class="name">{{ instrument.name }}</span>
<span class="construction">{{ instrument.top }} / {{ instrument.backAndSides }}</span>
<span class="price">$ {{ instrument.price }}</span>
</div>
</div>
</transition-group>
`
}
I think that setting v-bind:key="index" would take satisfy this, but I get the error pasted above.
解决方案
If you don't want to give a key to .instruments, you can remove that element and assign a tag and class attributes to <transition-group> instead since it renders an actual element which by default is a <span>.
<transition-group name="fade" tag="div" class="instruments">
In this way, the warning would not appear anymore since the immediate children (.instrument) have their unique keys assigned to them.
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