javascript数据转换

Question

如何把a数组形式的数据转换为newA形式的数据？

  let a = [{
        name: 'aa',
        platform: 'iOS1',
        version: '10.3.4.5654',
        upgradeNum: 500,
        creator: 'Jack',
        data: {
            createdAt: '2014-12-21 23:12:00',
            date: '2014-12-24 23:12:00',
            name: `This is production name 1`,
            upgradeNum: 'Upgraded: 56',
        }
    }, {
        name: 'aa',
        platform: 'iOS1',
        version: '10.3.4.5654',
        upgradeNum: 500,
        creator: 'Jack',
        data: {
            createdAt: '2014-12-22 23:12:00',
            date: '2014-12-24 23:12:00',
            name: `This is production name 2`,
            upgradeNum: 'Upgraded: 57',
        }
    }, {
        name: 'aa',
        platform: 'iOS1',
        version: '10.3.4.5654',
        upgradeNum: 500,
        creator: 'Jack',
        data: {
            createdAt: '2014-12-23 23:12:00',
            date: '2014-12-24 23:12:00',
            name: `This is production name 3`,
            upgradeNum: 'Upgraded: 58',
        }
    }, {
        name: 'bb',
        platform: 'iOS2',
        version: '10.3.4.5654',
        upgradeNum: 600,
        creator: 'Tom',
        data: {
            createdAt: '2014-12-11 23:12:00',
            date: '2014-12-24 23:12:00',
            name: `This is production name 1`,
            upgradeNum: 'Upgraded: 1',
        }
    }, {
        name: 'bb',
        platform: 'iOS2',
        version: '10.3.4.5654',
        upgradeNum: 600,
        creator: 'Tom',
        data: {
            createdAt: '2014-12-22 23:12:00',
            date: '2014-12-24 23:12:00',
            name: `This is production name 2`,
            upgradeNum: 'Upgraded: 2',
        }
    }, ]
    let newA = [{
        name: 'aa',
        platform: 'iOS1',
        version: '10.3.4.5654',
        upgradeNum: 500,
        creator: 'Jack',
        children: [{
            createdAt: '2014-12-21 23:12:00',
            date: '2014-12-24 23:12:00',
            name: `This is production name 1`,
            upgradeNum: 'Upgraded: 56',
        }, {
            createdAt: '2014-12-22 23:12:00',
            date: '2014-12-24 23:12:00',
            name: `This is production name 2`,
            upgradeNum: 'Upgraded: 57',
        }, {
            createdAt: '2014-12-23 23:12:00',
            date: '2014-12-24 23:12:00',
            name: `This is production name 3`,
            upgradeNum: 'Upgraded: 58',
        }]
    }, {
        name: 'bb',
        platform: 'iOS2',
        version: '10.3.4.5654',
        upgradeNum: 600,
        creator: 'Tom',
        children: [{
            createdAt: '2014-12-11 23:12:00',
            date: '2014-12-24 23:12:00',
            name: `This is production name 1`,
            upgradeNum: 'Upgraded: 1',
        }, {
            createdAt: '2014-12-22 23:12:00',
            date: '2014-12-24 23:12:00',
            name: `This is production name 2`,
            upgradeNum: 'Upgraded: 2',
        }]
    }]

Answer 1

题主要的代码如下

<script>

    let a = [{
        name: 'aa',
        platform: 'iOS1',
        version: '10.3.4.5654',
        upgradeNum: 500,
        creator: 'Jack',
        data: {
            createdAt: '2014-12-21 23:12:00',
            date: '2014-12-24 23:12:00',
            name: `This is production name 1`,
            upgradeNum: 'Upgraded: 56',
        }
    }, {
        name: 'aa',
        platform: 'iOS1',
        version: '10.3.4.5654',
        upgradeNum: 500,
        creator: 'Jack',
        data: {
            createdAt: '2014-12-22 23:12:00',
            date: '2014-12-24 23:12:00',
            name: `This is production name 2`,
            upgradeNum: 'Upgraded: 57',
        }
    }, {
        name: 'aa',
        platform: 'iOS1',
        version: '10.3.4.5654',
        upgradeNum: 500,
        creator: 'Jack',
        data: {
            createdAt: '2014-12-23 23:12:00',
            date: '2014-12-24 23:12:00',
            name: `This is production name 3`,
            upgradeNum: 'Upgraded: 58',
        }
    }, {
        name: 'bb',
        platform: 'iOS2',
        version: '10.3.4.5654',
        upgradeNum: 600,
        creator: 'Tom',
        data: {
            createdAt: '2014-12-11 23:12:00',
            date: '2014-12-24 23:12:00',
            name: `This is production name 1`,
            upgradeNum: 'Upgraded: 1',
        }
    }, {
        name: 'bb',
        platform: 'iOS2',
        version: '10.3.4.5654',
        upgradeNum: 600,
        creator: 'Tom',
        data: {
            createdAt: '2014-12-22 23:12:00',
            date: '2014-12-24 23:12:00',
            name: `This is production name 2`,
            upgradeNum: 'Upgraded: 2',
        }
    },]
    kv = {};
    let newA=[]
    a.forEach(i => {
        let index = kv[i.name] === undefined ? newA.length : kv[i.name];
        kv[i.name] = index;
        let item = newA[index] || i;
        if (item.children) {
            item.children.push(i.data)
        } else {
            item.children = [i.data];
            delete i.data;
            newA.push(item)
        }
    });
    console.log(newA)
</script>