components - Svelte - 组件一如何使用组件二的功能？

Question

CompOne 如何在 CompTwo 中运行函数“测试”？

CompOne.svelte

<script>
   import {test} from './CompTwo.svelte'
</script>
<!-- Some style and HTML tags for this component -->

CompTwo.svelte

<script>
   export const test = () => { console.log('testing function') }
</script>
<!-- Some style and HTML tags for this component -->

Answer 1

如果你有这个组件的实例并绑定(bind)到它，你可以运行子函数。

App.svelte

<script>
  import Component from './Component.svelte';   
  let comp;
</script>

<Component bind:this={comp} />
<button on:click={() => comp.test()}>Do Stuff</button>

Component.svelte

<script>
    export const test = () => console.log('testing');
</script>

Working example