2024年07月24日 建站教程
let data = [
{id: 1, text: '清北', parentId: 0},
{id: 2, text: '浙京', parentId: 2},
{id: 3, text: '浙京', parentId: 1},
{id: 4, text: '浙京', parentId: 3},
{id: 5, text: '清北', parentId: 1},
{id: 6, text: '浙京', parentId: 0},
];
data.forEach(ele => {
let parentId = ele.parentId;
if (parentId === 0) {
//parentId===0是根路径
} else {
//其它的扔到根路径child下面数组中.
data.forEach(d => {
if (d.id === parentId) {
let childArray = d.child;
if (!childArray) {
childArray = []
}
childArray.push(ele);
d.child = childArray;
}
})
}
});
//去除重复元素
data = data.filter(ele => ele.parentId === 0);
console.log('输出结果: ', data);
//输出结果
//0: {id: 1, text: '清北', parentId: 0, child: Array(2)}
//1: {id: 6, text: '浙京', parentId: 0}
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