我有这个数组:
aItems = [{
"PropertyA": "apple",
"PropertyB": "banana",
"PropertyC": "dog",
"PropertyD": "hotdog",
"PropertyE": "coldcat",
"PropertyF": "Y",
"PropertyG": "N"
},
...,
{
"PropertyA": "this",
"PropertyB": "is",
"PropertyC": "json",
"PropertyD": "code",
"PropertyE": "wow",
"PropertyF": "N",
"PropertyG": "N"
}]
我想使用 lodash 来获得这个结果:
aItems = [{
"propertyA": "apple",
"propertyB": "banana",
"propertyC": "dog",
"propertyD": "hotdog",
"propertyE": "coldcat",
"propertyNEW": true,
"propertyG": false
},
...,
{
"propertyA": "this",
"propertyB": "is",
"propertyC": "json",
"propertyD": "code",
"propertyE": "wow",
"propertyNEW": false,
"propertyG": false
}]
我想将每个属性名称与其他名称进行映射,并更改某些特定属性的值。 我可以使用 lodash 来完成吗?
最佳答案
是的,从 lodash v3.8.0 开始,您可以以任何需要的方式重新映射对象
ES5代码
var items = [ { oldKey: 'oldValue' /*...*/ } ]
var keyMapping = { oldKey: 'newKey' /*...*/ }
var valueMapping = { oldValue: 'newValue' /*...*/ }
var remapper = function(item){
return _(item) // lodash chain start
.mapKeys( function(v, k){ return keyMapping[k] } )
.mapValues( function(v){ return valueMapping[v] } )
.value() // lodash chain end
}
var remappedItems = items.map(remapper)
ES2015/ES6代码
let items = [ { oldKey: 'oldValue' /*...*/ } ]
let keyMapping = { oldKey: 'newKey' /*...*/ }
let valueMapping = { oldValue: 'newValue' /*...*/ }
let remapper = item => _(item) // lodash chain start
.mapKeys( (v, k)=> keyMapping[k] )
.mapValues( v => valueMapping[v] )
.value() // lodash chain end
let remappedItems = items.map(remapper)
关于javascript - 使用 lodash 重新映射属性名称和值,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/30940120/