let data = [
{
id: 1,
label: '一级 1',
children: [
{
id: 4,
label: '二级 1-1',
children: [
{
id: 9,
label: '三级 1-1-1'
},
{
id: 10,
label: '三级 1-1-2'
},
]
},
]
},
{
id: 11,
label: '一级 2',
}
]
const appendNodeInTree = (id, tree, obj) => {
tree.forEach(ele=> {
if (ele.id === id) {
ele.children ? ele.children.push(obj) : ele.children = [obj]
} else {
if (ele.children) {
appendNodeInTree(id, ele.children, obj)
}
}
})
return tree
}
console.log(appendNodeInTree(4, data, {
id: 13,
label: '三级 1-1-3',
}))
