Vue.js

# $listeners removed
кардинальное изменение

# Overview

The $listeners object has been removed in Vue 3. Event listeners are now part of $attrs:

{
  text: 'this is an attribute',
  onClose: () => console.log('close Event triggered')
}
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# 2.x Syntax

In Vue 2, you can access attributes passed to your components with this.$attrs, and event listeners with this.$listeners. In combination with inheritAttrs: false, they allow the developer to apply these attributes and listeners to some other element instead of the root element:

<template>
  <label>
    <input type="text" v-bind="$attrs" v-on="$listeners" />
  </label>
</template>
<script>
  export default {
    inheritAttrs: false
  }
</script>
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# 3.x Syntax

In Vue 3's virtual DOM, event listeners are now just attributes, prefixed with on, and as such are part of the $attrs object, so $listeners has been removed.

<template>
  <label>
    <input type="text" v-bind="$attrs" />
  </label>
</template>
<script>
export default {
  inheritAttrs: false
}
</script>
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If this component received an id attribute and a v-on:close listener, the $attrs object will now look like this:

{
  id: 'my-input',
  onClose: () => console.log('close Event triggered')
}
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# Migration Strategy

Remove all usages of $listeners.

Migration build flag: INSTANCE_LISTENERS

# See also