chuli(arr) {
            let kongarr = []
            for (let i = 0; i < arr.length; i++) {
                console.log("arr[i]", arr[i])
                let children1=[]
                let children2=[]
                let children3=[]
                let obj={}
                obj.id=arr[i].id
                obj.name=arr[i].name
                obj.children=children2
                let two=arr[i].children
                for (let j=0;j<two.length;j++){
                    console.log("two",two[j])
                    let san=two[j].children
                    console.log("san",san)
                    children2.push({
                        id:two[j].id,
                        name:two[j].name,
                        children:children3
                    })
                    if (two[j].name=='市公司'&&two[j].children.length>=2){
                        let sum=0
                        for (let k=0;k<san.length;k++){
                        }
                        children3.push({
                            age:"小計(jì)"
                        })
                    }else {
                        for (let k=0;k<san.length;k++){
                            children3.push({
                                bmdm:san[k].bmdm,
                                xmlx:san[k].xmlx
                            })
                        }
                    }
                }
                kongarr.push(obj)
            }
            console.log("kongarr2", kongarr)
            return kongarr
        }

var obj = {"name":"tom","sex":"male"}；
Object.defineProperty(obj, "age", {value:"18", enumerable:false});//增加不可枚舉的屬性age
Object.prototype.protoPer1 = function(){console.log("name is tom");};//通過原型鏈增加屬性，為一個(gè)函數(shù)
Object.prototype.protoPer2 = 2;通過原型鏈增加屬性，為一個(gè)整型值2
console.log("For In : ");
for(var a in obj)
console.log(a);

var obj = {"name":"tom","sex":"male"}；
Object.defineProperty(obj, "age", {value:"18", enumerable:false});//增加不可枚舉的屬性age
Object.prototype.protoPer1 = function(){console.log("name is tom");};//通過原型鏈增加屬性，為一個(gè)函數(shù)
Object.prototype.protoPer2 = 2;通過原型鏈增加屬性，為一個(gè)整型值2
console.log("Object.keys:")
console.log(Object.keys(obj));

Object.defineProperty(obj, "age", {value:"18", enumerable:false});//增加不可枚舉的屬性age
Object.prototype.protoPer1 = function(){console.log("name is tom");};//通過原型鏈增加屬性，為一個(gè)函數(shù)
Object.prototype.protoPer2 = 2;通過原型鏈增加屬性，為一個(gè)整型值2
console.log("Object.getOwnPropertyNames: ");
console.log(Object.getOwnPropertyNames(obj));

var arr = [1,2,3,4,5,6];
for(var a in arr) console.log(a);

var arr = [1,2,3,4,5,6];
console.log(Object.keys(arr));

var arr = [1,2,3,4,5,6];
console.log(Object.getOwnPropertyNames(arr));