Function: pick()
Call Signature
ts
function pick<T, K>(obj, keys): Pick<T, K>;Creates a new object with only the specified properties from the source object. 从源对象中创建一个只包含指定属性的新对象。
This function is useful for extracting specific properties from an object, creating a subset with only the properties you need. 此函数对于从对象中提取特定属性很有用， 创建一个只包含所需属性的子集。
Type Parameters
| Type Parameter | Description |
|---|---|
T | The type of the source object / 源对象的类型 |
K extends string | number | symbol | The keys to pick from the object / 要从对象中选择的键 |
Parameters
| Parameter | Type | Description |
|---|---|---|
obj | T | The source object / 源对象 |
keys | readonly K[] | The property keys to pick / 要选择的属性键 |
Returns
Pick<T, K>
A new object with only the picked properties / 只包含选择属性的新对象
Example
typescript
const user = { id: 1, name: 'John', email: 'john@example.com', password: 'secret' }
pick(user, ['id', 'name', 'email'])
// => { id: 1, name: 'John', email: 'john@example.com' }
pick(user, [])
// => {}Since
1.0.0
Call Signature
ts
function pick<T, K>(obj, ...keys): Pick<T, K>;Creates a new object with only the specified properties from the source object. 从源对象中创建一个只包含指定属性的新对象。
This function is useful for extracting specific properties from an object, creating a subset with only the properties you need. 此函数对于从对象中提取特定属性很有用， 创建一个只包含所需属性的子集。
Type Parameters
| Type Parameter | Description |
|---|---|
T | The type of the source object / 源对象的类型 |
K extends string | number | symbol | The keys to pick from the object / 要从对象中选择的键 |
Parameters
| Parameter | Type | Description |
|---|---|---|
obj | T | The source object / 源对象 |
...keys | K[] | The property keys to pick / 要选择的属性键 |
Returns
Pick<T, K>
A new object with only the picked properties / 只包含选择属性的新对象
Example
typescript
const user = { id: 1, name: 'John', email: 'john@example.com', password: 'secret' }
pick(user, ['id', 'name', 'email'])
// => { id: 1, name: 'John', email: 'john@example.com' }
pick(user, [])
// => {}Since
1.0.0