老师请检查，是否有可以优化的地方

来源：6-4 编程练习

Dreams乄深巷

2021-02-20 19:24:47

<!DOCTYPE html> 
<html> 
<head> 
    <meta charset="UTF-8" /> 
    <title></title> 
</head> 
<body> 
    <script> 
    //在此处补充代码
    function min(){
        var len=arguments.length;
        var minNum=arguments[0];
        if(len==0)return;
        for(var i=1;i<len;i++){
            if(minNum>arguments[i]) minNum=arguments[i];
        }
        return minNum;
    }
    var arr=[2,4,1,-1,56,3,-7];
    console.log(min.apply(window,arr));
    </script> 
</body> 
</html>