javascript - 根据另一个对象的数据创建一个对象(添加一个 "level")

Question

在我光荣的循环失败后，我来到这里寻求帮助。
基本上我想根据源数据“添加新级别”到我的目标 JSON。

基础 JSON:

var base = [
    {    
        children: [
            {
                children: [],
                parent: "ROOT",
                title: "Tenant1",
                typeName: "Tenants"
            },
            {
                children: [],
                parent: "ROOT",
                title: "Tenant2",
                typeName: "Tenants"
            }
        ],
        parent: null,
        title: "ROOT",
        typeName: null,
    }
];

目标 JSON:

var target = [
    {
        children: [
            {
                children: [
                    {
                         children: [],
                         parent: "Tenants",
                         title: "Tenant1",
                         typeName: "Tenants"
                     },
                     {
                         children: [],
                         parent: "Tenants", // <---- here
                         title: "Tenant2",
                         typeName: "Tenants"
                     }
                ],
                parent: "ROOT",             // <---- here
                title: "Tenants",
                typeName: "Tenants"
            }
        ],
        parent: null,
        title: "ROOT",
        typeName: null
    }
];

新级别需要将父级设置为 ROOT，并且“旧”子级(现在为叶子)必须将父级设置为其“typeName”。

Answer 1

希望这对您有用。我创建了一个递归函数，一旦找到您传递来添加的元素的父元素，它就会将父元素的子元素传递给当前元素并添加新元素。

var base = [
    {    
        children: [
            {
                children: [],
                parent: "ROOT",
                title: "Tenant1",
                typeName: "Tenants"
            },
            {
                children: [],
                parent: "ROOT",
                title: "Tenant2",
                typeName: "Tenants"
            }
        ],
        parent: null,
        title: "ROOT",
        typeName: null,
    },
];

let element = {
  parent: "ROOT",
  title: "Tenants",
  typeName: "Tenants"
};

function addNewLevel(list, element) {
	if(list.length) {
    for (var i = 0; i < list.length; i++) {
    	if(list[i].title === element.parent) {
      	element.children = list[i].children;
        for (var j = 0; j < element.children.length; j++) {
        	element.children[j].parent = element.title;
        }
        list[i].children = [element];
      } else if(list[i].children.length) {
      	let newList = addNewLevel(list[i].children, element);
        list[i].children = newList;
        return list[i];
      }
    }
    return list;
  }
}

console.log('New Level List', addNewLevel(base, element));