Javascript递归添加所有 "total"属性并返回给用户

Question

我得到了以下数据，我需要返回递归总数(在本例中为 60)。下面的代码返回TypeError: Cannot read property 'Symbol(Symbol.iterator)' of undefined指向object。我认为我在这里使用的代码不是用于数组定义的。如何将其转换为使用数组？

var data = [
    {
        total: 10,
        moreData: {
            total: 10
        }
    },
    {
        total: 10,
        moreData: {
            total: 10,
            moreData: {
                total: 10
            }
        }
    },
    {
        total: 10
    }
];

function sumUp(object){
    object.totalValue=0;
    for(child of object.children){
        object.totalValue+=sumUp(child);
    }
    return object.totalValue+object.value;
}

totalofall=sumUp(data);
console.log(totalofall);

Answer 1

结合array.prototype.map和array.prototype.reduce的递归方式:

var data = [
    {
        total: 10,
        moreData: {
            total: 10
        }
    },
    {
        total: 10,
        moreData: {
            total: 10,
            moreData: {
                total: 10
            }
        }
    },
    {
        total: 10
    }
];

var sum = data.map(totInObj).reduce((m, o) => m + o, 0);
console.log(sum);

function totInObj(obj) {
    return obj.moreData ? obj.total + totInObj(obj.moreData) : obj.total;
}