Javascript合并两个具有公共匹配元素的多维数组 [英] Javascript merging two multidimensional arrays with common matching elements

问题描述

我有两个多维数组，并希望将其合并为一个仅包含常见匹配标记的数据源。

I have two multi-dimensional arrays and would like to merge this into a single data source that contains only the common matching tags.

// jsfiddle
http://jsfiddle.net/Qh9X5/10173/

//jsfiddle http://jsfiddle.net/Qh9X5/10173/

//数组1

    var array1 = [{
            "Skills & Expertise": [{
              "id": 2,
              "tag": "Javascript"
            }, {
              "id": 3,
              "tag": "Design"
            }],
            "Location": [{
              "id": 0,
              "tag": "London"
            }, {
              "id": 1,
              "tag": "Germany"
            }],
            "Company": [{
              "id": 0,
              "tag": "Cheesestrings"
            }]
}];

// array 2

//array 2

var array2 = [{
            "Skills & Expertise": [{
              "id": 0,
              "tag": "JAVA"
            }, {
              "id": 1,
              "tag": "PHP"
            }, {
              "id": 2,
              "tag": "Javascript"
            }],
            "Location": [{
              "id": 0,
              "tag": "London"
            }],
            "Company": [{
              "id": 0,
              "tag": "Cheesestrings"
            }, {
              "id": 1,
              "tag": "Bakerlight"
            }]
          }]

所以结果应该是这样的

//期望的结果

  var array3 = [{
                "Skills & Expertise": [{
                  "id": 2,
                  "tag": "Javascript"
                }],
                "Location": [{
                  "id": 0,
                  "tag": "London"
                }],
                "Company": [{
                  "id": 0,
                  "tag": "Cheesestrings"
                }]
    }];

我是否可以通过使用联系人合并两个数组来开始 - 然后删除不使用联系人的元素存在于两者？

Would I start out by merging both arrays using a contact -- and then removing elements that don't exist in both?

var array3 = array1.concat(array2); // Merges both arrays

推荐答案

您可以使用哈希表它反映了数组项并使用嵌套方法来获取哈希值和结果集。

You could use a hash table which reflects the array items and use a nested approach for getting the hash and the result set.

var array1 = [{ "Skills & Expertise": [{ id: 2, tag: "Javascript" }, { id: 3, tag: "Design" }], Location: [{ id: 0, tag: "London" }, { id: 1, tag: "Germany" }], Company: [{ id: 0, tag: "Cheesestrings" }] }],
    array2 = [{ "Skills & Expertise": [{ id: 0, tag: "JAVA" }, { id: 1, tag: "PHP" }, { id: 2, tag: "Javascript" }], Location: [{ id: 0, tag: "London" }], Company: [{ id: 0, tag: "Cheesestrings" }, { id: 1, tag: "Bakerlight" }] }],
    hash = [],
    result;

array1.forEach(function (o, i) {
    Object.keys(o).forEach(function (k) {
        o[k].forEach(function (a) {
            hash[i] = hash[i] || {};
            hash[i][[k, a.tag].join('|')] = true;
        });
    });
});

result = array2.map(function (o, i) {
    var temp = {};
    Object.keys(o).forEach(function (k) {
        o[k].forEach(function (a) {
            if ((hash[i] || {})[[k, a.tag].join('|')]) {
                temp[k] = temp[k] || [];
                temp[k].push(a);
            }
        });
    });
    return temp;
});

console.log(result);

.as-console-wrapper { max-height: 100% !important; top: 0; }

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