no-v-for-template-key-on-child.md

pageClass	sidebarDepth	title	description	since
rule-details	0	vue/no-v-for-template-key-on-child	disallow key of `<template v-for>` placed on child elements	v7.0.0

vue/no-v-for-template-key-on-child

disallow key of <template v-for> placed on child elements

• ⚙️ This rule is included in all of "plugin:vue/vue3-essential", *.configs["flat/essential"], "plugin:vue/vue3-strongly-recommended", *.configs["flat/strongly-recommended"], "plugin:vue/vue3-recommended" and *.configs["flat/recommended"].

📖 Rule Details

This rule reports the key of the <template v-for> placed on the child elements.

In Vue.js 3.x, with the support for fragments, the <template v-for> key can be placed on the <template> tag.

See Migration Guide - key attribute > With <template v-for> for more details.

::: warning Note This rule is targeted at Vue.js 3.x. If you are using Vue.js 2.x, enable the vue/no-v-for-template-key rule instead. Don't enable both rules together; they are conflicting. :::

<template>
  <!-- ✓ GOOD -->
  <template v-for="todo in todos" :key="todo">
    <Foo />
  </template>

  <!-- ✗ BAD -->
  <template v-for="todo in todos">
    <Foo :key="todo" />
  </template>
</template>

🔧 Options

Nothing.

👫 Related Rules

• vue/no-v-for-template-key

📚 Further Reading

• Migration Guide - key attribute > With <template v-for>

🚀 Version

This rule was introduced in eslint-plugin-vue v7.0.0

🔍 Implementation

• Rule source
• Test source