[英]Searching through array of objects that contain arrays of objects efficiently
我目前正在搜索包含對象數組的對象數組,數據結構如下所示:
const category = 'general'
const field = 'rating'
const schema = {
categories: [
{
name: 'general',
label: 'General',
fields: [
{
name: 'id',
label: 'Market Street ID',
type: 'string'
},
{
name: 'rating',
label: 'Rating',
type: 'number'
}
]
},
{
name: 'location',
label: 'Location',
fields: [
{
name: 'search',
label: 'Query Parameters',
type: 'string'
}
]
}
]
}
預期的結果是在類別數組中搜索給定類別名稱(在本例中為“general”),然后在字段中搜索給定字段名稱(在本例中為“rating”)並返回與該字段關聯的類型. 我通過執行以下操作實現了這一點:
const type = schema.categories
.filter((cat) => cat.name === category)
.map((cat) => {
const fieldData = cat.fields.find((f) => f.name === field)
return fieldData.type
})
console.log(type[0])
我想知道是否有更有效的方法來搜索對象數組中的對象數組,可能類型未在數組中返回
如果您只需要第一個匹配項,則可以使用Array#find
和可選鏈接。
const category="general",field="rating",schema={categories:[{name:"general",label:"General",fields:[{name:"id",label:"Market Street ID",type:"string"},{name:"rating",label:"Rating",type:"number"}]},{name:"location",label:"Location",fields:[{name:"search",label:"Query Parameters",type:"string"}]}]}; const type = schema.categories.find(cat => cat.name === category)?.fields.find(f => f.name === field).type; console.log(type);
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