fix:增加nfc controller.off入参缺省值说明

Signed-off-by: N zhaoyi46@huawei.com <zhaoyi46@huawei.com>

fix:增加nfc controller.off入参缺省值说明
Signed-off-by: N zhaoyi46@huawei.com <zhaoyi46@huawei.com>
29d4e17b · zhaoyi46@huawei.com · d48ea41a · 29d4e17b
隐藏空白更改
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zh-cn/application-dev/reference/apis/js-apis-nfcController.md ...n/application-dev/reference/apis/js-apis-nfcController.md +1 -1

未找到文件。
--- a/zh-cn/application-dev/reference/apis/js-apis-nfcController.md
+++ b/zh-cn/application-dev/reference/apis/js-apis-nfcController.md
@@ -173,7 +173,7 @@ off(type: "nfcStateChange", callback?: Callback&lt;[NfcState](#nfcstate)&gt;): v
 | **参数名** | **类型** | **必填** | **说明** |
 | -------- | -------- | -------- | -------- |
 | type | string | 是 | 固定填"nfcStateChange"字符串。 |
-| callback | Callback&lt;[NfcState](#nfcstate)&gt; | 否 | NFC状态改变回调函数，可以空缺不填。 |
+| callback | Callback&lt;[NfcState](#nfcstate)&gt; | 否 | NFC状态改变回调函数，可以空缺不填。如果callback不填，将取消注册该事件关联的所有回调函数 |
  
 **示例**