多层级数组如何根据id匹配某个字段的值

Question

{"code":0,"msg":"成功","data":[{"children":[{"children":[],"id":2,"code":"S1","name":"销售部1"},{"children":[],"id":3,"code":"S2","name":"销售部2"}],"id":1,"code":"S","name":"销售部"},{"children":[{"children":[],"id":8,"code":"C1","name":"生产部1"}],"id":4,"code":"C","name":"生产部"},{"children":[],"id":5,"code":"Q","name":"质检部"},{"children":[],"id":6,"code":"W","name":"财务部"},{"children":[],"id":7,"code":"G","name":"采购部"}],"total":0}

• 请问上面格式的数组如何根据id匹配code，两个for循环的会报错

Answer 1

var response = {"code":0,"msg":"成功","data":[{"children":[{"children":[],"id":2,"code":"S1","name":"销售部1"},{"children":[],"id":3,"code":"S2","name":"销售部2"}],"id":1,"code":"S","name":"销售部"},{"children":[{"children":[],"id":8,"code":"C1","name":"生产部1"}],"id":4,"code":"C","name":"生产部"},{"children":[],"id":5,"code":"Q","name":"质检部"},{"children":[],"id":6,"code":"W","name":"财务部"},{"children":[],"id":7,"code":"G","name":"采购部"}],"total":0}



function findNode(list, cb) {
  for(const item of list) {
    if(cb(item)) return item
    if(Array.isArray(item.children)) {
      const child = findNode(item.children, cb)
      if(child) return child
    }
  }
  return null;
}

var item = findNode(response.data, item => item.id == 2)
console.log(item)