Utilize the $slots property when working with v-slot in your Vue application

When dealing with a specific use-case, it becomes necessary to retrieve the rendered width and height of a DOM element inside a slot. Typically, this can be achieved by accessing this.$slots.default[0].elm.

However, complications arise when introducing scoped slots to access component data, resulting in this.$slots becoming empty and causing code errors.

The question remains: How can one access the DOM element of a slot that utilizes a slot-scope?

This issue can be illustrated through the following basic example code:

App.vue:

<template>
  <div id="app">
    <HelloWorld v-slot="{ someBool }">
      <p>{{ someBool }}</p>
      <h1>Hello</h1>
    </HelloWorld>
    <HelloWorld>
      <h1>Hello</h1>
    </HelloWorld>
  </div>
</template>

<script>
import HelloWorld from './components/HelloWorld.vue';

export default {
  name: 'App',
  components: {
    HelloWorld,
  },
};
</script>

HelloWorld.vue:

<template>
  <div class="hello">
    <slot :someBool="someBool" />
  </div>
</template>

<script>
export default {
  name: 'HelloWorld',
  data() {
    return {
      someBool: false,
    };
  },
  mounted() {
    console.log(this.$slots);
  },
};
</script>

Answer №1

Utilize the $scopedSlots feature, which allows for both scoped and non-scoped slots:

export default {
  mounted() {
    console.log(this.$scopedSlots.default())
  }
}

Check out the demo here!

Answer №2

Sharing a tip on how to access slot values, even if it may not be directly related.

/js/components/product/Filter.vue

<template>
    <span class="ml-5">
        Slot Values: <span class="text-yellow-400">{{filterValues}}</span>
    </span>
</template>

<script>
export default {
    data() {
        return {
            filterValues: ''
        }
    },
    mounted() {
        this.filterValues = this.$slots.default()[0].children
    }
}
</script>

/views/products.blade.php

...
   <product-filter-vue>Instrument, FX</product-filter-vue>
...

https://i.sstatic.net/s3iCC.png

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