Question

我有两个对象：

var one = {
  addedItems: [0, 1],
  removedItems: [8, 9],
  oneTwo: false,
  someStuff: {
    anotherArray: ['a', 'b']
  }
};

var two = {
  addedItems: [3, 4],
  removedItems: [6, 7],
  someStuff: {
    anotherArray: ['c', 'd']
  }
};

最后我需要合并这两个对象并得到类似的结果：

{
  addedItems: [0, 1, 3, 4],
  removedItems: [8, 9, 6, 7],
  oneTwo: false,
  someStuff: {
    anotherArray: ['a', 'b', 'c', 'd']
  }
}

应对具有不同结构的对象执行操作。

这样做的最佳方式（或可能的方式）是什么？在jQuery或下划线/ lodash中是否有任何允许这样做的方法？

Answer 1

您是否检查了Lodash _.mergeWith(object, sources, customizer)方法？我认为这个例子符合你的期望。

https://lodash.com/docs/4.17.4#mergeWith

var one = { addedItems: [0, 1], removedItems: [8, 9], oneTwo: false, someStuff: { anotherArray: ['a', 'b'] } },
    two = { addedItems: [3, 4], removedItems: [6, 7], someStuff: { anotherArray: ['c', 'd'] } };

// In case of arrays, concatenate them instead
function customizer(objValue, srcValue) {
  if (_.isArray(objValue)) {
    return objValue.concat(srcValue);
  }
}

var result = _.mergeWith(one, two, customizer);

Here's the working example in Fiddle

Answer 2

您可以生成一个新对象，并使用已插入数组中的项附加数组。

＆＃13;

function deepMerge(source, target) {
    Object.keys(source).forEach(function (k) {
        if (Array.isArray(source[k])) {
            if (!Array.isArray(target[k])) {
                target[k] = [];
            }          
            target[k] = target[k].concat(source[k]);
            return;
        }
        if (source[k] && typeof source[k] === 'object') {
            target[k] = target[k] || {};
            deepMerge(source[k], target[k]);
            return;
        }
        target[k] = source[k];
    });
}

var one = { addedItems: [0, 1], removedItems: [8, 9], oneTwo: false, someStuff: { anotherArray: ['a', 'b'] } },
    two = { addedItems: [3, 4], removedItems: [6, 7], someStuff: { anotherArray: ['c', 'd'] } },
    result = {};

deepMerge(one, result);
deepMerge(two, result);

console.log(result);

＆＃13;

.as-console-wrapper { max-height: 100% !important; top: 0; }

＆＃13;

如何在JavaScript中将两个对象与数组属性连接？

2 个答案: