快速将数据变为树结构

data = [
{id:1, pid:0},
{id:2, pid:1},
{id:3, pid:1},
{id:4, pid:3},
{id:5, pid:2},
{id:6, pid:0},
]

parents = {}
data.forEach((v,k)=>{
  console.log(k, v)
  if (!parents[v["pid"]]) {
    parents[v["pid"]] = []
  }
  parents[v["pid"]].push(v)
})
console.log(parents)

function getChilds(id) {
  if (!parents[id]) {
    return []
  }
  var childs =  parents[id];
  return childs;
}

 

来源：https://www.cnblogs.com/lst619247/p/11770094.html