how can component delete itself in Vue 2.0

Question

as title, how can I do that

from offical documentation just tell us that $delete can use argument \'object\' and \'key\'

but I want delete a component by its

Answer 1

You could use the beforeDestroy method on the component and make it remove itself from the DOM.

beforeDestroy () {
  this.$root.$el.parentNode.removeChild(this.$root.$el)
},

Answer 2

No, you will not be able to delete a component directly. The parent component will have to use v-if to remove the child component from the DOM.

Ref: https://vuejs.org/v2/api/#v-if

Quoted from docs:

Conditionally render the element based on the truthy-ness of the expression value. The element and its contained directives / components are destroyed and re-constructed during toggles.

If the child component is created as part of some data object on parent, you will have to send an event to parent via $emit, modify (or remove) the data and the child component will go away on its own. There was another question on this recently: Delete a Vue child component

Answer 3

Instead of deleting your component from its parent you can still use v-if on the first <div> tag from the component itself. This would leave an empty component in your page and it's not best practice but may avoid handling events from parent.

Answer 4

I couldn't find instructions on completely removing a Vue instance, so here's what I wound up with:

module.exports = {
  ...
  methods: {
    close () {
      // destroy the vue listeners, etc
      this.$destroy();

      // remove the element from the DOM
      this.$el.parentNode.removeChild(this.$el);
    }
  }
};

Vue 3 is basically the same, but you'd use root from the context argument:

export default {
  setup(props, { root }){
    const close = () => {
      root.$destroy();
      root.$el.parentNode.removeChild(root.$el);
    };
    return { close };
  }
}

In both Vue 2 and Vue 3 you can use the instance you created:

const instance = new Vue({ ... });
...
instance.$destroy();
instance.$el.parentNode.removeChild(instance.$el);