javascript - 在javascript中从数组生成多级对象

Question

我有一个事件数组，我想在这些数组的对象之间建立关系。数组:

[{
    'area': 'punjab',
    'site': 'lahore',
    'link': 'http: //lahore.com'
}, {
    'area': 'punjab',
    'site': 'sargodha',
    'link': 'http: //sargodha.com'
}, {
    'area': 'punjab',
    'site': 'multan',
    'link': 'http: //multan.com'
} {
    'area': 'sindh',
    'site': 'karachi',
    'link': 'http: //karachi.com'
}]

知道我想让关系变成这样

 {
  "area": "punjab",
  "site": [
    {
      "name": "lahore",
      "link": [
        {
          "name": "http://sargodha.com",
        }
      ]
    },
   {
      "name": "sargodha",
      "link": [
        {
          "name": "http://sargodha.com",
        }
      ]
    }
  ]
},
{
  "area": "sindh",
  "site": [
    {
      "name": "karachi",
      "link": [
        {
          "name": "http://karachi.com",
        }
      ]
    }
}

这是我写的代码:

    function isinarrayfilters(matchingObject, targetArray, key) {
    var existindex = -1;
    $.each(targetArray, function(index, array) {
        if (array.key == matchingObject.key) {
            //Object exist in array
            existindex = index;
        }
    });
    return existindex;
}

generatedRelationArray = [];
        $.each(alertsJson, function(index, alertJson) {
            inarrayindex = isinarrayfilters(alertJson.area, relationArray,'area');
            if (inarrayindex == -1) {
                key = alertJson.site
                generatedsites = {
                    "area": alertJson.area,
                    "site": []
                }
                relationArray.push(generatedsites);
            }
        });

知道任何人指导我如何将网站附加到相关区域。

• 我必须再次运行循环并尝试检查存在的方法并获取索引并将站点推送到其中吗？

Answer 1

保留格式的答案:

var generate = function(list) {
  var resultList = [];
  var tmpStoreRef = {};

  $.each(list, function(id, item) {
    var area = item.area
        ,site = item.site
        ,link = item.link;
    if (typeof tmpStoreRef[area] === 'undefined') {
      tmpStoreRef[area] = {
        area: area,
        site: []
      }
      resultList.push(tmpStoreRef[area]);
    }
    tmpStoreRef[area].site.push({
      name: site,
      link: link
    });
  });

  return resultList;
};