如何在 Svelte 中绑定来自子组件的输入值？

Question

ideal

I'd like to get input data from child component.

What I have tried

<script>
  import Input from "./Input.svelte";
  let userGoal = "";
</script>

<h1>Your Goal is {userGoal}</h1>

<Input {userGoal} />

<script>
  export let userGoal = "";

  $: console.log(userGoal);
</script>

<input type="text" bind:value={userGoal} />

$: console.log(userGoal); shows userGoal at each event which is as I expected. However, It doesn't affect to parent Component.

Summary

I'm new to Svelte. Any help is appreciated.

Answer 1

Just change <Input {userGoal}/> to this:

<Input bind:userGoal/>

Demo here . If you want to call it something else in the parent, do bind:userGoal={somethingElse} .

Here's a tutorial on component bindings.