javascript - 将带有对象的数组拆分为 2 个数组

Question

我有一个包含多个对象的数组。我想将此数组拆分为多个数组。拆分的条件是 continent 项。

MyArray = [{continent:"europe", fruit:"orange", value:2},
           {continent:"asia", fruit:"banana", value:2},
           {continent:"europe", fruit:"apple", value:2},
           {continent:"asia", fruit:"apple", value:5}
          ];

输出:

[
 [{continent:"europe", fruit:"orange", value:2},
  {continent:"europe", fruit:"apple" value:2}
 ], [
  {continent:"asia", fruit:"banana", value:2},
  {continent:"asia", fruit:"apple" value:5}]
];

Answer 1

您可以搜索具有相同大陆的数组并更新此数组或使用实际对象推送一个新数组。

var array = [{ continent: "europe", fruit: "orange", value: 2 }, { continent: "asia", fruit: "banana", value: 2 }, { continent: "europe", fruit: "apple", value: 2 }, { continent: "asia", fruit: "apple", value: 5 }],
    grouped = array.reduce(function (r, o) {
        var group = r.find(([{ continent }]) => continent === o.continent)
        if (group) {
            group.push(o);
        } else {
            r.push([o]);
        }
        return r;
    }, []);
    
console.log(grouped);

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