How get ref from slot in vue 3?

Question

i need to to focus ref with name test1 a set some value which is placed in compontend slot (from outside). Is it possible to do it somehow? I tried to get from $refs or $slots, but failed.

App.vue

<template>
  <div id="app">
    <HelloWorld>
      <input type="text" ref="test1" />
    </HelloWorld>
  </div>
</template>

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

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

<style>
#app {
  font-family: Avenir, Helvetica, Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-align: center;
  color: #2c3e50;
  margin-top: 60px;
}
</style>

Component.vue
===

<template>
  <slot></slot>
  <hr />
  <input type="text" ref="test2" />
</template>

<script>
export default {
  name: 'HelloWorld',
  mounted() {
    this.$refs.test2.value = 'test 2 value';
    // how get ref 'test1' ?
  },
};
</script>

Answer 1

You can simply pass a ref through an event or a prop. Here's a solution using your example.

   <!-- App.vue -->
   <div id="app">
    <HelloWorld :test="$refs.test1">
      <template v-slot:input>
        <input type="text" ref="test1" />
      </template>
    </HelloWorld>
   </div>
   
   <!-- HelloWorld.vue -->
   <template>
     <slot></slot>
     <hr />
     <input type="text" ref="test2" />
   </template>
   
   <script>
    export default {
      name: 'HelloWorld',
      mounted() {
        this.$refs.test2.value = 'test 2 value';
        
        // Use the prop
        this.props.test.value = "test 1 value";
      },
    };
   </script>