javascript - How does the ElementUI tree control find the parent node through the child nodes?

Question

I used the ElementUI tree control and set check-strictly to true. There is no relationship between checking the child node and checking the parent node. Now that I have selected one of the child nodes, how can I pass this child node? Find its corresponding parent node or root node?

世界只因有你 · Answer

Implement it yourself.

Get the id of the child node, then traverse the data to find the parent node

// 广度优先遍历
// data 就是ElementUI的Tree组件里那个data
let node = [data]
let ok = false
let result // 包含你说的那个子节点的父节点
while (!ok) {
    let item = node.shift()
    if (item.id == id) {
        result = item
        ok = true
    } else if (item.children && item.children.length > 0) {
        node = node.concat(item.children)
    }
}