let data = [
[{
label: "春上衣",
value: "A1",
child: []
}, {
label: "春裤子",
value: "A2",
child: []
}, {
label: "夏上衣",
value: "A3",
child: []
}, ],
[{
label: "XS",
value: "B1",
child: []
}, {
label: "S",
value: "B2",
child: []
}, {
label: "M",
value: "B3",
child: []
}, ],
[{
label: "120",
value: "C1",
child: []
}, {
label: "130",
value: "C2",
child: []
}, {
label: "140",
value: "C3",
child: []
}, ],
[{
label: "红",
value: "D1",
child: []
}, {
label: "黄",
value: "D2",
child: []
}, {
label: "蓝",
value: "D3",
child: []
}, ],
[{
label: "2021",
value: "E1",
child: []
}, {
label: "2022",
value: "E2",
child: []
}, {
label: "2023",
value: "E3",
child: []
}, ]
]
function toTree(data) {
let len = data.length - 1;
for (let i = 0; i < len; i++) {
childrenDeal(data, len - i)
}
return data[0];
}
function childrenDeal(data, len) {
data[len - 1].map(el => {
data[len].map(el2 => {
el.child.push(el2)
})
})
}
console.log(toTree(data))