0

例如有一个初始对象:
let obj = {}
现在有一个变量x,int类型,通过循环i的值来新增obj的children,如:
for (let i = 0; i < x; i++) {}
i=0时,obj为{}
i=1时,obj为{children: [{}]}
i=2时,obj为{children: [{children:[{}]}]}
i=3时,obj为{children: [{children:[{children:[{}]}]}]}
...
以此类推,应该如何处理?


modify date: 2019-12-5

原需求是根据层级数来生成对应层级的树结构,并在末级节点添加指定的对象,现在问题已经解决,非常感谢各位大佬提供的思路,让我获益匪浅。一下是我的实现方式,分享出来:

createTree (level) {
    let node = []
    for (let i = level; i > 0; i--) {
      // 将各级节点展开在node中
      node[i - 1] = function (num) {
        return function (num) {
          // 子节点
          let children = [{
            title: '',
            levelMax: i
          }]
          // 末级节点增加考核要点
          if (i === level) {
            // 考核要点
            let _childRule = [{
                dataCollectionOrgId: "",
                dataCollectionOrgName: "",
                lableType: 0,
                lableTypeName: "",
                perDesc: "",
                score: 0,
                scoreMethod: 0
              }]
            children[0] = { ...children[0], childRule: _childRule }
            console.log('last node:', children)
          }
          return children[0]
        }(i)
      } (i)
      // 排除i等于level的情况,node中不存在这个位置
      if (i > 0 && i <= level - 1) {
        // 从node末尾开始向前合并子节点
        node[i - 1]['children'] = { ...node[i - 1][0], ...node[i] }
      }
    }
    // 保留树形结构node[0]
    node.splice(1)
    this.$set(this.templateTree, 0, node[0])
    console.log('templateTree: ', this.templateTree)
  }
Fick 24
12月4日提问
4 个回答
1

可以用递归实现:

function generateChildren(x, obj = {}) {
  if (x === 0) {
    return {}
  } else if (x === 1) {
    return {children: [{}]}
  } else {
    return {children: [generateChildren(obj, x - 1)]}
  }
}
0

你这样做有什么意义吗?

function generateChildren(obj, x) {
  while (x--) {
    obj.children = [{}];
    obj = obj.children[0];
  }
}
0
let obj: any = {};
generateChildren(obj, 10)
function generateChildren(obj: any, x: number) {
    for (let i = 0; i < x; i++) {
        addChildren(obj)
    }
}

function addChildren(obj: any) {
    if (!obj.children) {
        obj.children = [];
        return;
    }
    if(!obj.children.children){
        obj.children.children = [];
        return;
    }else{
        if(obj.children.children){
            addChildren(obj.children.children);
        }
    }   
}
0
var testObj = {}
var x = 3
for (let i = 0; i < x; i++) {
    var cObj = {children: {}}
    testObj['children'] = cObj
}
console.log('testObj')
console.log(testObj)

这样不香吗

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