我需要在嵌套数组中查找多个元素并将其作为数组返回。
我使用reduce
函数来查找元素,但它只返回一条记录。
嵌套数组:
{
"type": "group",
"level": 0,
"expand": "-closed",
"selected": false,
"text": "Федулов Владислав Владиславович",
"phoneNumber": "+7 (927) 999 9999",
"email": "qweeqwe@mail.ru",
"id": 24,
"parent": null,
"cardType": 0,
"childrens": [
{
"type": "group",
"level": 1,
"expand": "-closed",
"selected": false,
"text": "Ширяев Феликс Богуславович",
"phoneNumber": "+7 (123) 456 7810",
"email": "test@test.ru",
"id": 47,
"parent": 24,
"cardType": 0,
"childrens": [
{
"type": "manager",
"level": 2,
"expand": "-empty",
"selected": false,
"text": "Колесова Анастасия Олеговна",
"phoneNumber": "+7 (900) 000 0001",
"email": "eprosvirina@baccasoft.ru",
"id": 58,
"parent": 47,
"cardType": 0,
"childrens": null
}
]
}
]
},
{
"type": "group",
"level": 0,
"expand": "-closed",
"selected": false,
"text": "Игнатьева Женевьева Павловна",
"phoneNumber": "+7 (777) 777 7777",
"email": "igp@sks.ru",
"id": 3,
"parent": null,
"cardType": 0,
"childrens": [
{
"type": "group",
"level": 1,
"expand": "-closed",
"selected": false,
"text": "Меретин Викентий Васильевич",
"phoneNumber": "+7 (917) 193 5222",
"email": "keshman@gmail.com",
"id": 2,
"parent": 3,
"cardType": 1,
"childrens": [
{
"type": "manager",
"level": 2,
"expand": "-empty",
"selected": false,
"text": "Климаков Алексей Александрович",
"phoneNumber": "+7 (903) 888 8888",
"email": "krenog@gmail.com",
"id": 20,
"parent": 2,
"cardType": 1,
"childrens": null
}
]
}
]
}
和reduce
函数:
var array = store.managersTree.treeNodes;
var items = [];
const findItemNested = (arr, searchString, nestingKey) => (
arr.reduce((a, item) => {
if (a) return a;
if (item.text.indexOf(searchString)!==-1 ||
item.phoneNumber.indexOf(searchString)!==-1 ||
item.email.indexOf(searchString)!==-1) return item;
if (item[nestingKey]) return findItemNested(item[nestingKey],
searchString, nestingKey)
}, [])
);
const element = findItemNested(array, searchString, "childrens");
我试图找到一条至少匹配一个条件的记录,期望 reduce
返回多条记录,但尽管找到了多条记录,但这只返回一条记录。
如有任何帮助,我们将不胜感激。
UPD:searchString
可以是 phoneNumber
、text
或 email
等字符串
最佳答案
您可以递归地减少
数组。
- Destructure
reduce
参数中的对象,分别获取nestingKey
和其他属性 - 创建一个
filterKeys
数组,其中包含您要搜索searchString
的键。 - 使用
some
检查对象中的任何字段是否具有includes
searchString
的值。 - 如果
nestingKey
存在,则可以将嵌套项推送到累加器数组中。
const input=[{"type":"group","level":0,"expand":"-closed","selected":false,"text":"Федулов Владислав Владиславович","phoneNumber":"+7 (927) 999 9999","email":"qweeqwe@mail.ru","id":24,"parent":null,"cardType":0,"childrens":[{"type":"group","level":1,"expand":"-closed","selected":false,"text":"Ширяев Феликс Богуславович","phoneNumber":"+7 (123) 456 7810","email":"test@test.ru","id":47,"parent":24,"cardType":0,"childrens":[{"type":"manager","level":2,"expand":"-empty","selected":false,"text":"Колесова Анастасия Олеговна","phoneNumber":"+7 (900) 000 0001","email":"eprosvirina@baccasoft.ru","id":58,"parent":47,"cardType":0,"childrens":null}]}]},{"type":"group","level":0,"expand":"-closed","selected":false,"text":"Игнатьева Женевьева Павловна","phoneNumber":"+7 (777) 777 7777","email":"igp@sks.ru","id":3,"parent":null,"cardType":0,"childrens":[{"type":"group","level":1,"expand":"-closed","selected":false,"text":"Меретин Викентий Васильевич","phoneNumber":"+7 (917) 193 5222","email":"keshman@gmail.com","id":2,"parent":3,"cardType":1,"childrens":[{"type":"manager","level":2,"expand":"-empty","selected":false,"text":"Климаков Алексей Александрович","phoneNumber":"+7 (903) 888 8888","email":"krenog@gmail.com","id":20,"parent":2,"cardType":1,"childrens":null}]}]}],
filterKeys = ["text", "phoneNumber", "email"];
function findItemNested(array, searchString, nestingKey) {
return array.reduce((acc, { [nestingKey]: nested, ...o }) => {
if (filterKeys.some(k => o[k] && o[k].includes(searchString)))
acc.push(o)
if (nested)
acc.push(...findItemNested(nested, searchString, nestingKey))
return acc;
}, [])
}
console.log(findItemNested(input, "keshman", "childrens"))
console.log(findItemNested(input, "@gmail.com", "childrens"))
关于javascript - 查找嵌套数组中的多个元素,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/56437956/