找出和删除相关数据

需求：删除指定id相关的数据

let data = [
    { id: 1, parentId: "" },
    { id: 2, parentId: 1 },
    { id: 3, parentId: 1 },
    { id: 4, parentId: 2 },
    { id: 5, parentId: 2 },
    { id: 6, parentId: 4 },
    { id: 7, parentId: 5 }
];

比如删除2相关的数据，那么只剩下[{ id: 1, parentId: "" },{ id: 3, parentId: 1 }]

function deleteId(data, id) {
    for (let i = data.length - 1; i >= 0; i--) {
        if (data[i].parentId === id) {
            const childrenId = data[i].id;
            data.splice(i, 1);
            deleteId(data, childrenId)
        } else if (data[i].id === id) {
            data.splice(i, 1)
        }
    }
}

deleteId(data, id)

console.log(data);

打印结果

[ { id: 1, parentId: '' }, { id: 3, parentId: 1 } ]

需求：找出指定id相关联的数据

function findId(data, id) {
    this.deleteId = function (data, id) {
        for (let i = data.length - 1; i >= 0; i--) {
            if (data[i].parentId === id) {
                const childrenId = data[i].id;
                data.splice(i, 1);
                this.deleteId(data, childrenId)
            } else if (data[i].id === id) {
                data.splice(i, 1)
            }
        }
        return data
    };
    this.filterId = function (data, newData) {
        return data.filter(item1 => newData.every(item2 => item2.id !== item1.id))
    };
    return this.filterId(data, this.deleteId([...data], id))
}

let test = findId(data, 2);
console.log('test', test);

打印

test [
  { id: 2, parentId: 1 },
  { id: 4, parentId: 2 },
  { id: 5, parentId: 2 },
  { id: 6, parentId: 4 },
  { id: 7, parentId: 5 }
]