如何在 JavaScript 中将两个对象合并为同一个属性？

Question

我有 2 个独立的 JS 对象，它们需要合并到同一个属性中。

对象目前看起来像这样：

对象 1：

[0:{"acircuit":"ABCDEFGH","astatus":"Test"}, 1:{"acircuit":"IJKLMNOP","astatus":"Test2"}]

对象 2：

[0:{"bcircuit":"ABCDEFGH","bstatus":"Test3"}, 1:{"bcircuit":"IJKLMNOP","bstatus":"Test4"}]

我需要将这些结果合并为一个结果，如下所示：

[
    0:{"acircuit":"ABCDEFGH","astatus":"Test","bcircuit":"ABCDEFGH","bstatus":"Test3"}, 
    1:{"acircuit":"IJKLMNOP","astatus":"Test2","bcircuit":"IJKLMNOP","bstatus":"Test4"}
]

当前代码如下所示：

allResults = {this.state.aCircuitResults.concat(this.state.bCircuitResults)}

但是，结果如下所示：

[
    0:{"acircuit":"ABCDEFGH","astatus":"Test"},
    1:{"acircuit":"IJKLMNOP","astatus":"Test2"}
    2:{"bcircuit":"ABCDEFGH","bstatus":"Test3"}, 
    3:{"bcircuit":"IJKLMNOP","bstatus":"Test4"}
]

提前致谢。

Answer 1

您可以使用mapand Object.assign，假设您想按它们在数组中的位置组合它们：

const result = firstArray.map((firstObject, index) => Object.assign({}, firstObject, secondArray[index]));

例子：

const result = firstArray.map((firstObject, index) => Object.assign({}, firstObject, secondArray[index]));

如果您需要通过属性（例如，acircuit和bcircuit）将它们关联起来，从属性Map键控的其中一个构建一个，然后您可以在map操作中使用查找：

const second = new Map(secondArray.map(obj => [obj.bcircuit, obj]));
const result = firstArray.map(firstObject => Object.assign({}, firstObject, second.get(firstObject.acircuit)));

例子：

const firstArray = [{"acircuit":"ABCDEFGH","astatus":"Test"},{"acircuit":"IJKLMNOP","astatus":"Test2"}];

const secondArray = [{"bcircuit":"ABCDEFGH","bstatus":"Test3"},{"bcircuit":"IJKLMNOP","bstatus":"Test4"}];

const result = firstArray.map((firstObject, index) => Object.assign({}, firstObject, secondArray[index]));

console.log(result);