Question

我有以下数据模型。我试图数组化简并从中创建对象对。另外，如果有奇数，我会将其添加到最后一对。

给出数据：

const pairs = [ {name: bob, value: foo}, {name: jane, value: foo}, {name: mary, value: foo}, {name: elizabeth, value: foo}, {name: colin, value: foo}]

想要获得以下输出：

const pairs = [ 

    [{name: bob, value: foo}, {name: jane, value: foo}],
    [{name: mary, value: foo}, {name: elizabeth, value: foo}, {name: colin, value: foo}]
]

到目前为止我尝试过的是：

const result = pairs.reduce((acc, curr, i, array) => {
    const acc = acc.length % 3 === 0 ? acc.slice(acc.length -1, acc.length) : acc.push(curr);
    return acc
}, []);

是否有使用Array.reduce（）实现此目的的简单方法？

Answer 1

const pairs = [
  {name: 'bob',       value: 'foo'},
  {name: 'jane',      value: 'foo'},
  {name: 'mary',      value: 'foo'},
  {name: 'elizabeth', value: 'foo'},
  {name: 'colin',     value: 'foo'}
];

const flooredHalf = parseInt(pairs.length / 2);
const result = new Array(flooredHalf);
for (let i = 0; i <= flooredHalf; i += 2) {
  result[i / 2] = pairs.slice(i, (i + 3 === pairs.length ? i + 3 : i + 2));
}

/* DEMO */
console.log(JSON.stringify(result));

ES6创建一个包含对的数组的数组

1 个答案: