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Add a mention of support for v-bind.sync #765

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Mar 9, 2018
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Add a mention of support for v-bind.sync #765

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8 changes: 8 additions & 0 deletions src/v2/guide/components.md
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Expand Up @@ -635,6 +635,14 @@ new Vue({
this.$emit('update:foo', newValue)
```

`.sync` 修飾子は、オブジェクトを使用して複数のプロパティを一度に設定するときに `v-bind` とともに使うこともできます:

```html
<comp v-bind.sync="{ foo: 1, bar: 2 }"></comp>
```

これは `foo` と `bar`の両方に対して `v-on` アップデートリスナーを追加する効果があります。

### カスタムイベントを使用したフォーム入力コンポーネント

カスタムイベントは、`v-model`とともに動く、カスタムフォーム入力を作成するためにも使用されます。以下を思い出しましょう:
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