javascript - Lodash - 如何根据键合并两个对象数组？

Question

我正在尝试用 lodash 连接两个对象数组。我有这两个数组，我以这种方式使用 concat 运算符:

 var array1 = [{ id: 1, name: 'doc1' }, { id: 2, name: 'doc2' }];
 var array2 = [{id:1, name:'doc1'}, {id:3, name:'doc3'}, {id:4, name:'doc4'}];

 var array3 = _.concat(array1, array2);

我想要一个这样的数组

 [{id:1, name:'doc1'}, {id:2, name:'doc2'}, {id:3, name:'doc3'}, {id:4, name:'doc4'}]]

但是通过 concat 函数，我得到了一个这样的数组:

  [{ id: 1, name: 'doc1' }, { id: 1, name: 'doc1' }, { id: 2, name: 'doc2' }, { id: 3, name: 'doc3' }, { id: 4, name: 'doc4' }]]

我想避免重复具有相同 id 的对象...我可以使用哪种运算符？

Answer 1

您可以使用 merge 获得结果和 keyBy lodash 函数。

var array1 = [{id:1, name:'doc1'}, {id:2, name:'doc2'}];
var array2 = [{id:1, name:'doc1'}, {id:3, name:'doc3'}, {id:4, name:'doc4'}];

var merged = _.merge(_.keyBy(array1, 'id'), _.keyBy(array2, 'id'));
var values = _.values(merged);
console.log(values);

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