我刚学nodejs，有个题目，有没有会的大佬解答一下。

Question

class Cash {
//你需要书写的代码

    }
    const cash1 = new Cash(105);
    const cash2 = new Cash(66);
    const cash3 = cash1.add(cash2);
    const cash4 = Cash.add(cash1, cash2);
    Console.log(`${cash3}`, `${cash4}`);

    //代码输出结果为：1元7角1分 1元7角1分

Answer 1

class Cash {
    constructor(x) {
        this.x = x;
    }
    add(a) {
        return parseInt((a.x + this.x) / 100) + '元' + parseInt((a.x + this.x) % 100 / 10) + '角' + (a.x + this.x) % 10 + '分'
    }
    static add(a, b) {
        return parseInt((a.x + b.x) / 100) + '元' + parseInt((a.x + b.x) % 100 / 10) + '角' + (a.x + b.x) % 10 + '分'
    }
}

const cash1 = new Cash(105);
const cash2 = new Cash(66);
const cash3 = cash1.add(cash2);
const cash4 = Cash.add(cash1, cash2);
console.log(`${cash3}`, `${cash4}`);