從數組lodash過濾對象

Question

我有一個這樣的數組

var data = [
 {attribute_code: "description", value: "<p>Description</p>"}, 
 {attribute_code: "category_ids", value: Array(2)},
 {attribute_code: "required_options", value: "0"},
 {attribute_code: "has_options", value: "0"},
 {attribute_code: "activity", value: "11,18,19,20,21,22,23"},
 {attribute_code: "material", value: "37,38"}
]

我想使用lodash刪除description, category_ids, required_options, has_options使其看起來像

[
 {attribute_code: "activity", value: "11,18,19,20,21,22,23"},
 {attribute_code: "material", value: "37,38"}
]

我嘗試過這樣的事情

const filter = _(customAttributes)
    .keyBy('attribute_code')
    .pullAt(['description', 'category_ids', 'required_options', 'has_options'])
    .value();

但這又回來了

[
 {attribute_code: "description", value: "<p>Description</p>"}, 
 {attribute_code: "category_ids", value: Array(2)},
 {attribute_code: "required_options", value: "0"},
 {attribute_code: "has_options", value: "0"},
]

作為_.at，我想它不會改變數組。 我在這里做錯了什么？ 我只是想不通。

Answer 1

假設原始數組存儲在data ，

var data = [
 {attribute_code: "description", value: "<p>Description</p>"}, 
 {attribute_code: "category_ids", value: Array(2)},
 {attribute_code: "required_options", value: "0"},
 {attribute_code: "has_options", value: "0"},
 {attribute_code: "activity", value: "11,18,19,20,21,22,23"},
 {attribute_code: "material", value: "37,38"}
]

您可以使用filter功能過濾掉不需要的元素：

var toRemove = new Set([
     "description",
     "category_ids",
     "required_options",
     "has_options"
])

_(data).filter(e => !toRemove.has(e.attribute_code)).value()

同樣，這也可以做到沒有破折號。

data.filter(e => !toRemove.has(e.attribute_code))

Answer 2

您可以使用dropWhile()

 var data = [{attribute_code: "description", value: "<p>Description</p>"},{attribute_code: "category_ids", value: Array(2)},{attribute_code: "required_options", value: "0"},{attribute_code: "has_options", value: "0"},{attribute_code: "activity", value: "11,18,19,20,21,22,23"},{attribute_code: "material", value: "37,38"}], removeParameters = ['description', 'category_ids', 'required_options', 'has_options'], result = _.dropWhile(data, ({attribute_code}) => removeParameters.includes(attribute_code)); console.log(result); 

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