js任意位数求和

 <script>
    //任意位数求和
    function sum(){
        if(arguments.length==1)
        {
            console.log(arguments[0])
        return;
        }
            var i=0;
            var res=0
            for(0;i<arguments.length;i++){
          sum +=arguments[i]
           }    
           console.log(sum)
           return;
        }
        sum(1)
        </script>

 

转载于:https://www.cnblogs.com/codezhao/p/10493813.html