字节编程题：实现一个add方法

[sisterAn]

例如：

add(1)(2,3)(4).value()   
输出： 10

[kexiaofu]

先来抛砖，希望可以引玉

function add() {
  const args = Array.prototype.slice.apply(arguments);
  const self = this;
  this.nums = [...args];
  function _add() {
    const _args = Array.prototype.slice.apply(arguments);
    this.nums.push(..._args);
    return _add; 
  }
  _add.value = function() {
    return self.nums.reduce((acc, cur) => acc += cur, 0);
  }
  return _add;
}

考验的是闭包和this

[oxyzhg]

function add(...args) {
  const nums = [...args];

  function addFn(...args1) {
    nums.push(...args1);
    return addFn;
  }

  addFn.value = () => {
    const sum = nums.reduce((s, n) => s + n, 0);
    console.log(sum);
    return sum;
  };

  return addFn;
}

[m7yue]

思路都差不多

const add = (...args) => {
    const _add = (...args1) => {
        return add(...args, ...args1)
    }
    _add.value = () => args.reduce((t, e) => t+e)

    return _add
}
add(1)(2,3)(4).value()

[feng9017]

function add(...params) {
    const result = add.bind(null, ...params);
    result.value = () => params.reduce((accumulator, cur) => accumulator + cur);

    return result;
}

[z253573760]

function add(...args) {
  const _add = (..._args) => {
    args.push(..._args);
    return _add;
  };
  _add.value = () => args.reduce((a, b) => a + b, 0);
  return _add;
}

const res = add(1)(2, 3)(4).value(); //10
console.log(res);

[dlrandy]

function add(...params) {
let args = [...params];
function innerAdd(...p) {
args = args.concat(p);
return innerAdd;
}
function value() {
return args.reduce((s, n) => s + n , 0)
}
innerAdd.value = value;

return innerAdd;
}

[xllpiupiu]

/**
 * 函数柯里化实现add(1)(1,2)(3)等
 * https://blog.csdn.net/weixin_30498807/article/details/102319249
 */
// let obj = {
//     name:'hell',
//     toString:function() {
//         console.log('调用了toString')
//         return '22'
//     },
//     valueOf:function() {
//         console.log('调用了obj.valueOf');
//         return '00'
//     }
// }
// console.log(obj+"3")
function test() {
    console.log(1);
}
test.toString = function () {
    console.log('调用了valueOf方法');
    return 2;
}
function add() {
    var arr = Array.prototype.slice.call(arguments)
    const _adder = function () {
        arr.push(...arguments)
        return _adder;
    }
    _adder.valueOf = function () {
        return arr.reduce((a, b) => a + b);
    }
    return _adder;
}
let res = add(1)(2)(3, 4);
console.log(add(1)(2, 3).valueOf())
console.log(res+0)

[liu-mengwei]

function add(...args1) {
let _add = function (...args2) {
return add(...args1, ...args2);
};

_add.value = function () {
let sum = 0;
for (let num of args1) {
sum += num;
}
return sum;
};

return _add;
}