Xinuy

``` javascript function repast (guests, seatNum) { var arr=[]; for(var i=0;i

天真的我还用in去遍历属性orz 参考前面几楼 ``` javascript function isEmpty(obj){ return !Object.keys(obj).length; }; ```

``` javascript function add(n){ function helper(a,b){ var sum=a+b; var s=helper.bind(null,sum); s.valueOf=s.toSrting=function(){ return sum; } return s; } return helper(n,0); } console.log(+add(1)(2)(3)); // 6 console.log(+add(1)(2)(3)(4)); //10 console.log(+add(1)(2)(3)(4)(5)); // 15 var addTwo...