我有一组对象数组：
let x = [{
CategoryName: 'abc',
Items: ['3A']
},
{
CategoryName: 'xyz',
Items: ['5Z']
},
{
CategoryName: 'abc',
Items: ['6B']
},
{
CategoryName: 'abc',
Items: ['9C']
},
{
CategoryName: 'xyz',
Items: ['1X']
}
];我想要的是：
[
{CategoryName:'abc',Items['3A','6B','9C']},
{CategoryName:'xyz',Items['1X','5Z']}
]
我怎样才能实现这一目标lodash？
您可以group通过CategoryName和flatMap结果通过Items. 就是这样！
_(x).groupBy('CategoryName').map((v, k)=> ({CategoryName: k, Items: _.flatMap(v, 'Items')})).value()
工作演示：
let x = [{"CategoryName":"abc","Items":["3A"]},{"CategoryName":"xyz","Items":["5Z"]},{"CategoryName":"abc","Items":["6B"]},{"CategoryName":"abc","Items":["9C"]},{"CategoryName":"xyz","Items":["1X"]}],
res;
res = _(x).groupBy('CategoryName').map((v, k)=> ({CategoryName: k, Items: _.flatMap(v, 'Items')})).value();
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我来说两句