Options: Misc #

name #

Explicitly declare a display name for the component.

• Type

  interface ComponentOptions {
    name?: string
  }
  

• Details

  The name of a component is used for the following:

  • Recursive self-reference in the component's own template
  • Display in Kdu DevTools' component inspection tree
  • Display in warning component traces

  When you use Single-File Components, the component already infers its own name from the filename. For example, a file named MyComponent.kdu will have the inferred display name "MyComponent".

  Another case is that when a component is registered globally with app.component, the global ID is automatically set as its name.

  The name option allows you to override the inferred name, or to explicitly provide a name when no name can be inferred (e.g. when not using build tools, or an inlined non-SFC component).

  There is one case where name is explicitly necessary: when matching against cacheable components in <KeepAlive> via its include / exclude props.

inheritAttrs #

• Type

  interface ComponentOptions {
    inheritAttrs?: boolean // default: true
  }
  

• Details

  By default, parent scope attribute bindings that are not recognized as props will "fallthrough". This means that when we have a single-root component, these bindings will be applied to the root element of the child component as normal HTML attributes. When authoring a component that wraps a target element or another component, this may not always be the desired behavior. By setting inheritAttrs to false, this default behavior can be disabled. The attributes are available via the $attrs instance property and can be explicitly bound to a non-root element using k-bind.

• Example

  <script>
  export default {
    inheritAttrs: false,
    props: ['label', 'value'],
    emits: ['input']
  }
  </script>
  
  <template>
    <label>
      {{ label }}
      <input
        k-bind="$attrs"
        k-bind:value="value"
        k-on:input="$emit('input', $event.target.value)"
      />
    </label>
  </template>
  

  When declaring this option in a component that uses <script setup>, a separate <script> block is necessary:

  <script>
  export default {
    inheritAttrs: false
  }
  </script>
  
  <script setup>
  defineProps(['label', 'value'])
  defineEmits(['input'])
  </script>
  
  <template>
    <label>
      {{ label }}
      <input
        k-bind="$attrs"
        k-bind:value="value"
        k-on:input="$emit('input', $event.target.value)"
      />
    </label>
  </template>
  

• See also: Fallthrough Attributes

components #

An object that registers components to be made available to the component instance.

• Type

  interface ComponentOptions {
    components?: { [key: string]: Component }
  }
  

• Example

  import Foo from './Foo.kdu'
  import Bar from './Bar.kdu'
  
  export default {
    components: {
      // shorthand
      Foo,
      // register under a different name
      RenamedBar: Bar
    }
  }
  

• See also: Component Registration

directives #

An object that registers directives to be made available to the component instance.

• Type

  interface ComponentOptions {
    directives?: { [key: string]: Directive }
  }
  

• Example

  export default {
    directives: {
      // enables k-focus in template
      focus: {
        mounted(el) {
          el.focus()
        }
      }
    }
  }
  

  <input k-focus>
  

  A hash of directives to be made available to the component instance.

• See also: Custom Directives