getMaxFloor (treeData) {
let floor = 0
let v = this
let max = 0
function each (data, floor) {
data.forEach(e => {
e.floor = floor
if (floor > max) {
max = floor
}
if (e.children.length > 0) {
each(e.children, floor + 1)
}
})
}
each(treeData,1)
return max
}
返回值为：3
注：传入值需是数组，如下:
[
{
"label": "广东省",
"children": [
{
"label": "梅州市",
"children": [
{
"label": "兴宁市",
"children": []
}
]
}
]
},
{
"label": "一级2", "children": []},
{
"label": "一级3", "children": []}
]
若是对象形式，外边用“[]”包裹即可。
{
"label": "广东省",
"children": [
{
"label": "梅州市",
"children": [
{
"label": "兴宁市",
"children": []
}
]
}
]
},
{
"label": "一级2", "children": []},
{
"label": "一级3", "children": []}