te')); return $arr; } /* 遍历用户所有主题 * @param $uid 用户ID * @param int $page 页数 * @param int $pagesize 每页记录条数 * @param bool $desc 排序方式 TRUE降序 FALSE升序 * @param string $key 返回的数组用那一列的值作为 key * @param array $col 查询哪些列 */ function thread_tid_find_by_uid($uid, $page = 1, $pagesize = 1000, $desc = TRUE, $key = 'tid', $col = array()) { if (empty($uid)) return array(); $orderby = TRUE == $desc ? -1 : 1; $arr = thread_tid__find($cond = array('uid' => $uid), array('tid' => $orderby), $page, $pagesize, $key, $col); return $arr; } // 遍历栏目下tid 支持数组 $fid = array(1,2,3) function thread_tid_find_by_fid($fid, $page = 1, $pagesize = 1000, $desc = TRUE) { if (empty($fid)) return array(); $orderby = TRUE == $desc ? -1 : 1; $arr = thread_tid__find($cond = array('fid' => $fid), array('tid' => $orderby), $page, $pagesize, 'tid', array('tid', 'verify_date')); return $arr; } function thread_tid_delete($tid) { if (empty($tid)) return FALSE; $r = thread_tid__delete(array('tid' => $tid)); return $r; } function thread_tid_count() { $n = thread_tid__count(); return $n; } // 统计用户主题数 大数量下严谨使用非主键统计 function thread_uid_count($uid) { $n = thread_tid__count(array('uid' => $uid)); return $n; } // 统计栏目主题数 大数量下严谨使用非主键统计 function thread_fid_count($fid) { $n = thread_tid__count(array('fid' => $fid)); return $n; } ?>javascript - How to bind input value from child component in Svelte? - Stack Overflow

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    javascript - How to bind input value from child component in Svelte? - Stack Overflow

    programmeradmin3浏览0评论

    ideal

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

    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.

    ideal

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

    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.

    • javascript
    • single-page-application
    • svelte
    Share Improve this question edited Nov 30, 2019 at 20:04 Alexander Nied 13.7k4 gold badges29 silver badges49 bronze badges asked Nov 30, 2019 at 19:49 Kohei MurakamiKohei Murakami 3495 silver badges15 bronze badges
    Add a ment  | 

    1 Answer 1

    Reset to default 16

    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 ponent bindings.

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