如何比较数组的对象，并在JavaScript

-2

第一阵列：

generalInfo = [{"fName": "Suku", "lName": "Brown", "sex": "Male", "Id": "RY12S"}, {"fName": "Mary", "lName": "Sue", "sex": "Female", "Id": "UT72W"}]

二阵：

paymentInfo = [{"Id": "RY12S", "amount": "1000.00", "purpose": "rent", "date": "2017-17-07"}, {"Id": "UT72W", "amount": "5000.00", "purpose": "renovation", "date": "2017-15-07"}]

现在，我想能够比较两个阵列的Id字段并返回它们的唯一信息。

至少第三应该是这样的：

specificInfo = [{"Id": "RY12S","fName": "Suku", "lName": "Brown", "amount": "1000.00", "purpose": "rent"}, {"Id": "UT72W","fName": "Mary", "lName": "Sue", "amount": "5000.00", "purpose": "renovation"}]

有没有简单的方法来实现这一目标？

来源

2017-07-17 Israel Z Kollie

你有什么试过？预计你至少会尝试，然后当/如果你有问题，我们很乐意提供帮助。 –

[Array.push（）if exists does not exist？）（https://stackoverflow.com/questions/1988349/array-push-if-does-not-exist） –

这是重复的问题。你可以检查这个答案：https://stackoverflow.com/questions/1988349/array-push-if-does-not-exist –

的ES6溶液map和find：

var generalInfo = [{"fName": "Suku", "lName": "Brown", "sex": "Male", "Id": "RY12S"}, {"fName": "Mary", "lName": "Sue", "sex": "Female", "Id": "UT72W"}]; 
 

 
var paymentInfo = [{"Id": "RY12S", "amount": "1000.00", "purpose": "rent", "date": "2017-17-07"}, {"Id": "UT72W", "amount": "5000.00", "purpose": "renovation", "date": "2017-15-07"}]; 
 

 
var uniqueInfo = generalInfo.map((generalItem) => { 
 
    var paymentItem = paymentInfo.find((item) => item.Id === generalItem.Id); 
 

 
    return { 
 
    Id: generalItem.Id, 
 
    fName: generalItem.fName, 
 
    lName: generalItem.lName, 
 
    amount: paymentItem.amount, 
 
    purpose: paymentItem.purpose 
 
    }; 
 
}); 
 

 
console.log(uniqueInfo);

试图了解背后的逻辑这种情况，如果您需要在ES5实现，尝试着自己在这里发帖之前做。

来源

2017-07-17 11:00:06

如何比较数组的对象，并在JavaScript

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