Question

无法将完整的问题放在标题中。我有一个对象数组，每个对象有两个键值。第一个键值是一个字符串，第二个键是另一个对象数组。

我需要迭代这个数组，以便我只有唯一的主名称。如果名称存在于新数组中，则只将相关数组推送到相应的对象。我希望这对于阅读本文的人有一定道理。

我希望迭代的数组示例：

[
{master: 'Omni Mixer Homogenizer', related: [{_id: "59f5f1fe7d079b6be8fdef5c", id: 75, product_name: "product name"}]},
{master: 'Omni Mixer Homogenizer', related: [{_id: "59f5f1fe7d079b6be8fdef5e", id: 89, product_name: "product name"}]},
{master: 'μHB MICRO HOMOGENIZER', related: [{_id: "59f5f1fe7d079b6be8fdef5r", id: 102, product_name: "product name"}]},
{master: 'μHB MICRO HOMOGENIZER', related: [{_id: "59f5f1fe7d079b6be8fdef5f", id: 67, product_name: "product name"}]},
{master: 'Omni Mixer Homogenizer', related: [{_id: "59f5f1fe7d079b6be8fdef5z", id: 92, product_name: "product name"}]},
]

基于上面的数组，我希望得到一个如下所示的结果：

[
{master: 'Omni Mixer Homogenizer', related: [{_id: "59f5f1fe7d079b6be8fdef5c", id: 75, product_name: "product name"}, {_id: "59f5f1fe7d079b6be8fdef5e", id: 89, product_name: "product name"},{_id: "59f5f1fe7d079b6be8fdef5z", id: 92, product_name: "product name"}]},
{master: 'μHB MICRO HOMOGENIZER', related: [{_id: "59f5f1fe7d079b6be8fdef5r", id: 102, product_name: "product name"}, {_id: "59f5f1fe7d079b6be8fdef5f", id: 67, product_name: "product name"}]},
]

非常感谢任何帮助，谢谢。

Answer 1

你不需要使用underscore.js。

let objects = [
{master: 'Omni Mixer Homogenizer', related: [{_id: "59f5f1fe7d079b6be8fdef5c", id: 75, product_name: "product name"}]},
{master: 'Omni Mixer Homogenizer', related: [{_id: "59f5f1fe7d079b6be8fdef5e", id: 89, product_name: "product name"}]},
{master: 'μHB MICRO HOMOGENIZER', related: [{_id: "59f5f1fe7d079b6be8fdef5r", id: 102, product_name: "product name"}]},
{master: 'μHB MICRO HOMOGENIZER', related: [{_id: "59f5f1fe7d079b6be8fdef5f", id: 67, product_name: "product name"}]},
{master: 'Omni Mixer Homogenizer', related: [{_id: "59f5f1fe7d079b6be8fdef5z", id: 92, product_name: "product name"}]},
]

function process(object) {
  let results = [];
  objects.forEach(object => { // iterate through array
    let result = results.find(x => x.master === object.master); 
    if (result) { // if item with "master" exists 
      object.related.forEach(item => { // add all realted items to existing items "related" array
        if (!result.related.find(x => x._id === item._id)) {
          result.related.push(item);
        }
      });
    } else { // otherwise add an item to "results" array
      results.push(object);
    }
  });
  return results;
}

console.log(process(objects));

如何迭代对象数组并根据唯一键值推送到新数组

1 个答案: