vue/require-v-for-key

Require v-bind:key with v-for directives

Bad · Good

Default severity: error
Presets: essential, happy-path, nuxt, ecosystem, opinionated
Automatic fix: None; review the suggested change
Applies to: Vue SFC templates and blocks, with script context where the rule requires it
Options: No rule-specific options. Severity and preset selection are configurable.

Configuration (Vite+)

import { defineConfig } from "@vizejs/vite-plugin/vite-plus";

export default defineConfig({
  lint: {
    vize: {
      "preset": "incremental",
      "rules": {
        "vue/require-v-for-key": "error"
      }
    },
  },
});

vp run lint

Bad

Each repeated <li> lacks a key that identifies its corresponding item during list updates.

<template>
  <li v-for="item in items">{{ item.name }}</li>
</template>

Good

:key="item.id" gives each repeated node the item's identity rather than its current position.

<template>
  <li v-for="item in items" :key="item.id">{{ item.name }}</li>
</template>

Good avoids this rule's finding under the configuration above; other rules may still report diagnostics.

Implementation · All rules