KeyValueChangeRecord
Record representing the item change information.
interface KeyValueChangeRecord<K, V> {
key: K
currentValue: V | null
previousValue: V | null
}
属性
| 属性 | 说明 |
|---|---|
key: K | 只读 Current key in the Map. |
currentValue: V | null | 只读 Current value for the key or |
previousValue: V | null | 只读 Previous value for the key or |
