lodash将对象值（字符串）转换为数字

Question

我有一个非常简单的对象，如下所示。我正在尝试使用lodash，因为我在我的应用程序的其他部分使用它。我试图找到一种方法将特定键的值转换为数字。

在下面的示例中，类似于：

_.mapValues(obj.RuleDetailID, _.method('parseInt'))

---

宾语：

var obj = [{
  "RuleDetailID": "11624",
  "AttributeValue": "172",
  "Value": "Account Manager",
  "IsValueRetired": "0"
}, {
  "RuleDetailID": "11626",
  "AttributeValue": "686",
  "Value": "Agent",
  "IsValueRetired": "0"
}, {
  "RuleDetailID": "11625",
  "AttributeValue": "180",
  "Value": "Analyst",
  "IsValueRetired": "0"
}, {
  "RuleDetailID": "11629",
  "AttributeValue": "807",
  "Value": "Individual Contributor",
  "IsValueRetired": "0"
}, {
  "RuleDetailID": "11627",
  "AttributeValue": "690",
  "Value": "Senior Agent",
  "IsValueRetired": "0"
}];

预期产出：

var obj = [{
  "RuleDetailID": 11624,
  "AttributeValue": "172",
  "Value": "Account Manager",
  "IsValueRetired": "0"
}, {
  "RuleDetailID": 11626,
  "AttributeValue": "686",
  "Value": "Agent",
  "IsValueRetired": "0"
}, {
  "RuleDetailID": 11625,
  "AttributeValue": "180",
  "Value": "Analyst",
  "IsValueRetired": "0"
}, {
  "RuleDetailID": 11629,
  "AttributeValue": "807",
  "Value": "Individual Contributor",
  "IsValueRetired": "0"
}, {
  "RuleDetailID": 11627,
  "AttributeValue": "690",
  "Value": "Senior Agent",
  "IsValueRetired": "0"
}];

是否有一系列方法我可以与lodash一起鞭打来实现这一目标？

Answer 1

如果要改变原始数组，请使用lodash#each：

_.each(obj, item => item.RuleDetailID = parseInt(item.RuleDetailID, 10));

如果要创建新数组（不要改变原始数组），请将lodash#map与lodash#clone一起使用：

let newArr = _.map(obj, item => {
  let newItem = _.clone(item);
  newItem.RuleDetailID = parseInt(newItem.RuleDetailID, 10);
  return newItem;
});