javascript - 在数组对象中、在选定的键中过滤搜索

Question

我需要一些建议或最好的方法来使用传递的值将其数组数据过滤器。 目前，我有

let arrayobject = [
{"name": "apple", "type": "juice-material", "srnum": 123234},
{"name": "cranberry", "type": "desert-material", "srnum": 98989},
{"name": "grapes", "type": "wine-material", "srnum":656565}]

如果我通过了apple，那么返回数组将是

[{"name": "apple", "type": "juice-material", "srnum": 123234}]

如果我通过了wine-material 返回结果

{"name": "grapes", "type": "wine-material", "srnum":656565}

与 srnum 类似，传递它时会给出过滤器数组对象结果。

目前，

我尝试过使用

_.some(arrayobject, _.unary(_.partialRight(_.includes, passedValue)))

它给出了上下文结果，但不可预测。

让我知道过滤数据的最佳方法。 谢谢。

Answer 1

嗯，我认为你的方法几乎是最好的。但是，您使用 _.some如果任何项目匹配，如果您将其与 _.filter 交换，则只会给出 bool 结果您可以获得所有匹配的项目，也可以更改为 _.find只获取第一个:

let arrayobject = [
  {"name": "apple",     "type": "juice-material",  "srnum": 123234},
  {"name": "cranberry", "type": "desert-material", "srnum": 98989},
  {"name": "grapes",    "type": "wine-material",   "srnum": 656565}
]

function filterByValues(collection, whatToSearchFor) {
  //separating just for easier readability
  let predicate = _.unary(_.partialRight(_.includes, whatToSearchFor));
  
  return _.filter(collection, predicate);
}

//matches a value
console.log(filterByValues(arrayobject, "apple"));
console.log(filterByValues(arrayobject, "wine-material"));
console.log(filterByValues(arrayobject, 98989));

//doesn't match a key
console.log(filterByValues(arrayobject, "name"));
console.log(filterByValues(arrayobject, "type"));

<script src="https://cdn.jsdelivr.net/npm/lodash@4.17.15/lodash.min.js"></script>

话虽如此，@georg 在评论中指出，您可以使用更少的 Lodash 功能来重写此代码，而只需使用 _.includes 进行简单的回调即可。 - 这可能比使用_.partialRight和_.unary更具可读性:

let arrayobject = [
  {"name": "apple",     "type": "juice-material",  "srnum": 123234},
  {"name": "cranberry", "type": "desert-material", "srnum": 98989},
  {"name": "grapes",    "type": "wine-material",   "srnum": 656565}
]

function filterByValues(collection, whatToSearchFor) {
  //separating just for easier readability
  let predicate = item => _.includes(item, whatToSearchFor);
  
  return _.filter(collection, predicate);
}

//matches a value
console.log(filterByValues(arrayobject, "apple"));
console.log(filterByValues(arrayobject, "wine-material"));
console.log(filterByValues(arrayobject, 98989));

//doesn't match a key
console.log(filterByValues(arrayobject, "name"));
console.log(filterByValues(arrayobject, "type"));

<script src="https://cdn.jsdelivr.net/npm/lodash@4.17.15/lodash.min.js"></script>