javascript lodash 将对象值（字符串）转换为数字
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lodash convert object value(string) to number
提问by SBB
I have a very simple object like below. I am trying to use lodashas I am using it in other parts of my application. I am trying to find a way to convert the value of a specific key to a number.
我有一个非常简单的对象，如下所示。我正在尝试lodash在应用程序的其他部分使用它。我试图找到一种将特定键的值转换为数字的方法。
In the example below, something like:
在下面的示例中，类似于：
_.mapValues(obj.RuleDetailID, _.method('parseInt'))
Object:
目的：
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"
}];
Expected Output:
预期输出：
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"
}];
Is there a chain of methods I can whip together with lodashto achieve this?
是否有一系列方法可以一起使用lodash来实现这一目标？
回答by alexmac
If you want to mutatethe original array, use lodash#each:
如果要改变原始数组，请使用lodash#each：
_.each(obj, item => item.RuleDetailID = parseInt(item.RuleDetailID, 10));
If you want to createa new array (don't mutate the original array), use lodash#mapwith lodash#clone:
如果要创建新数组（不要改变原始数组），请使用lodash#mapwith lodash#clone：
let newArr = _.map(obj, item => {
let newItem = _.clone(item);
newItem.RuleDetailID = parseInt(newItem.RuleDetailID, 10);
return newItem;
});
