将对象键复制到同一对象的另一个键中

Question

我有与object相关联的数组列表。要求是制作一个具有所有关键值的新密钥。

var obj = {
    all:[
    obj.one,
    obj.two
    ],
 one:[
  'a',
  'b',
  'c'
 ],
 two:[
 'd',
 'e',
 'f',
 'g'
 ]
}

//通缉结果

var obj = {
        all:[
        'a',
        'b',
        'c'
        'd',
        'e',
        'f',
        'g'
        ],
     one:[
      'a',
      'b',
      'c'
     ],
     two:[
     'd',
     'e',
     'f',
     'g'
     ]
    }

Answer 1

import java.util.Scanner;

public class PrintDigits {
public static void main(String [] args) {
   Scanner scnr= new Scanner(System.in);
   int userInput = 0;
   int positiveInt = 0;

    System.out.println("enter a positive integer:");
    userInput = scnr.nextInt();

    positiveInt = userInput % 10;
    System.out.println(positiveInt);

    scnr.close();
    return;
    }
}

示例：

function accumulateKeyValues(obj){
    var accumulated = [];
    for(var key in obj)
        accumulated = accumulated.concat(obj[key]);
    obj["all"] = accumulated;
}

Answer 2

您可以获取对象的所有键并获取新数组的所有值。

var obj = { one:['a', 'b', 'c'], two: ['d', 'e', 'f', 'g'] };

obj.all = Object.keys(obj).reduce(function (r, k) {
    return r.concat(obj[k]);
}, []);

console.log(obj);

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