CODEWITHSUNDEEP
vue.jsvue-componentvuejs2
胡亚雄
胡亚雄

Reputation: 2189

How to listen all child components rendered in a parent component?

synonym.vue

<template>

<div id="synonym-container">
    <div></div>
    <div id="synonym-group-list-wrapper">
        <ul id="synonym-group-list">
            <li v-for="synonymGroup of synonymGroupList" :key="synonymGroup._id">
                <carousel :synonyms="synonymGroup.synonyms"></carousel>
            </li>
        </ul>
    </div>
</div>

</template>

<script>

import Carousel from './synonym-carousel.vue'
import $ from 'jquery'

export default {
    components: {
        'carousel': Carousel,
    },
    mounted() {
        console.log($('.synonym-list'));
    },
}
</script>

synonym-carousel.vue

<template>

<div class="synonym-group">
    <ul class="synonym-list">
        <li></li>
    </ul>
</div>

</template>


<script>

export default {
}
</script>

My goal is that I want to get $('.synonym-list').width() in synonym.vue file so I can change it for all child component in parent component, but I don't know how to manage it.I checked document theres no hook for it. If u have any idea please tell me, thanks!

Upvotes: 5

Views: 3383

Answers (2)

CodinCat
CodinCat

Reputation: 15914

Use events.

<carousel @update="onCarouselUpdate" :synonyms="synonymGroup.synonyms"></carousel>

...

export default {
  components: { ... },
  mounted () { ... },
  methods: {
    onCarouselUpdate () {
      console.log('Carousel Updated!')
    }
  }
}

synonym-carousel:

export default {
  updated () {
    this.$emit('update')
  }
}

docs: https://v2.vuejs.org/v2/guide/components.html#Custom-Events

Upvotes: 4

胡亚雄
胡亚雄

Reputation: 2189

synonym.js

<li v-for="(synonymGroup, i) of synonymGroupList" :key="synonymGroup._id">
    <carousel @update="onCarouselUpdate" :synonyms="synonymGroup.synonyms" :isLast="i === (synonymGroupList.length - 1)? true: false"></carousel>
</li>

export default {
  components: { ... },
  mounted () { ... },
  methods: {
    onCarouselUpdate () {
      console.log('Carousel Updated!')
    }
  }
}

synonym-carousel:

export default {
  mounted() {
    if(this.isLast) {
        this.$emit('update');
    }
}

Based on @CodinCat answer, this is my final resolution. It has the advantage that it does not trigger update for each list-item (since v-for is used) but only for the last one, so when 'everything is ready'.

Upvotes: 0

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