js将一个数组对象中包含两个相同的key属性，整理成为一个新的数组

Question

const list = [
    {
        no:'202012300001',
        exno:'yt',
        name:'订单1'
    },
    {
        no:'202012300001',
        exno:'yt',
        name:'订单2'
    },
    {
        no:'202012300002',
        exno:'yt',
        name:'订单3'
    },
    {
        no:'202012300002',
        exno:'yt',
        name:'订单4'
    }
];

//需要整理成为
const list = [
{
        name:'yt',
        no:'202012300001',
        list:[
            {
                name:'订单1'
            },
            {
                name:'订单2'
            }
        ],
    },
    {
        name:'yt',
        no:'202012300002',
        list:[
            {
                name:'订单4'
            },
            {
                name:'订单3'
            }
        ],
    }
];

这要怎么处理呢？求大神指点

Answer 1

 arr = [
        {
            no: '202012300001',
            exno: 'yt',
            name: '订单1'
        },
        {
            no: '202012300001',
            exno: 'yt',
            name: '订单2'
        },
        {
            no: '202012300002',
            exno: 'yt',
            name: '订单3'
        },
        {
            no: '202012300002',
            exno: 'yt',
            name: '订单4'
        }
    ];
    let newArr = []
    arr.forEach(({ no, exno }) => {
        if (newArr.filter((res) => { return res.no == no && res.exno == exno }).length == 0) {
            newArr.push({ no, exno, list: [] })
        }
    })
    newArr.forEach((item) => {
        let names = arr.filter((res) => { return res.no == item.no && res.exno == item.exno });
        names.forEach((res) => {
            item.list.push(res.name)

        })
    })
    console.log(newArr)