1 function sum(){
2 let result =
null;
3 for(let i=0; i<arguments.length; i++
){
4 result +=
arguments[i];
5 }
6 return result;
7 }
8 console.log(sum(1,2,3
));
9
10 function fn(){
11 let arr =
Array.prototype.slice.call(arguments);
12 return eval(arr.join('+'
));
13 }
14 console.log(fn(4,5,6));
转载于:https://www.cnblogs.com/liufeiran/p/11162444.html
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