vue/no-duplicate-attributes ​

disallow duplication of attributes

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

When there are multiple attributes with the same name on a component, only the last one is used and the rest are ignored, so this is usually a mistake.

📖 Rule Details ​

This rule reports duplicate attributes. v-bind:foo directives are handled as the attribute foo.

🔧 Options ​

{
  "vue/no-duplicate-attributes": ["error", {
    "allowCoexistClass": true,
    "allowCoexistStyle": true
  }]
}

• allowCoexistClass (boolean) ... Enables v-bind:class directive can coexist with the plain class attribute. Default is true.
• allowCoexistStyle (boolean) ... Enables v-bind:style directive can coexist with the plain style attribute. Default is true.

"allowCoexistClass": false, "allowCoexistStyle": false ​

🚀 Version ​

This rule was introduced in eslint-plugin-vue v3.0.0

🔍 Implementation ​

• Rule source
• Test source