How to get data from a component in VueJS

Question

I have the following component:

Component

<template>
<div>
  <label class="typo__label">Single selecter</label>
  <multiselect v-model="value" :options="options" :searchable="false" :close-on-select="false" :show-labels="false" placeholder="Pick a value"></multiselect>
</div>
</template>

<script>
import Multiselect from 'vue-multiselect'

export default {
  components: {
    Multiselect
  },
  data () {
    return {
      value: '',
      options: ['Select option', 'options', 'selected', 'mulitple', 'label', 'searchable', 'clearOnSelect', 'hideSelected', 'maxHeight', 'allowEmpty', 'showLabels', 'onChange', 'touched']
    }
  }
}
</script>

I use it on my page like this:

<p id="app-two">
  <dropdown></dropdown>
  @{{ value }}
  @{{ message }}
</p>

<script>
    new Vue({
    el: '#app',
    data: {
        message: 'Test message'
    }
});
</script>

When I start the page, @ {{message}} shows a "test message", but @ {{value}} is empty. I see that the value of the dropdown component is updated in VueJS Dev Tools, but it does not appear on the page. How to access component data in vue element? Something like @ {{dropdown.value}}

Answer 1

<template>
    <div>
      <label class="typo__label">Single selecter</label>
      <multiselect v-model="internalValue" :options="options" :searchable="false" :close-on-select="false" :show-labels="false" placeholder="Pick a value">  </multiselect>
    </div>
</template>

<script>
    import Multiselect from 'vue-multiselect'

    export default {
      components: {
        Multiselect
      },
      props: ['value'],
      data () {
        return {
          internalValue: this.value,
          options: ['Select option', 'options', 'selected', 'mulitple', 'label', 'searchable', 'clearOnSelect', 'hideSelected', 'maxHeight', 'allowEmpty', 'showLabels', 'onChange', 'touched']
        }
      },
      watch:{
         internalValue(v){
             this.$emit('input', v);
         }
      }
    }
</script>

and on your page

<p id="app-two">
  <dropdown v-model="selectedValue"></dropdown>
  @{{ selectedValue}}
  @{{ message }}
</p>

<script>
    new Vue({
    el: '#app',
    data: {
        selectedValue: null
        message: 'Test message'
    }
});
</script>

Here is an example , not using multi-select, but a custom component that implements support v-model.

Answer 2

, , ?